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how can we explain the difference between the resistivity and the resistance of the conductor?

Asked by 25th February 2008 7:02 PM

Actully...i want to know that Why resistance is actually needed???

Asked by jazlene 12th March 2008 5:52 PM

is power directly proportional to the resistence or inversely proportional to resistence?

Asked by 17th March 2008 3:05 PM

Find the resistance of a hollow cylindrical pipe of length 1m whose inner and outer radii are 10cm and 20 cm respectively. Assume that the cylindrical pipe is made of a material of resistivity 2 x 10-8ohm m.

Asked by narasimhasarma10 14th June 2015 11:19 AM

@ wires of resistence a & b of equal mass and same material are taken the diameter of wira a is half of diameter b if the resistence of wire a is24 ohms find the resistence of wire b

Asked by Porwal_kumudini 16th July 2015 5:36 PM

sir can you explain me this question      A piece of resistance wire has a resistance 16 ohm.Its diameter is doubled.what will be the new" R"

Asked by seeni2005 31st May 2016 12:20 PM

When a potential difference of 2v is applied across a end of a wire of 5m length, a current of 1A is found to flow it. Calculate 1. resistance per unit length 2. resistance of 2m unit length 3. resistance across ends of the wire if is doubled on itself.

Asked by Aryan 16th June 2016 2:28 PM

Please solve the following: Asked by manasd 19th June 2016 6:55 PM

Please provide stepwise soln for this. Asked by ayushi 3rd July 2016 8:01 PM

If the resistance doubled it self what happens to new resistance? Sir i want detailed explanation

Asked by venkat 10th October 2017 1:29 PM

Sir resistance doubled it self that line iam not understood iam not satisfy about your solution sir please explain it in proper way

Asked by venkat 10th October 2017 7:58 PM

Which solution is correct sir? Asked by venkat 6th November 2017 3:38 PM

If the length of resistor is made double by keeping its area constant then what would be new resistance[where R is old resistance].

Asked by rkadpkdk 13th November 2017 8:15 PM

Why are metals cood conductors of electricity?Explain in terms of resistance.

Asked by dr_pradip27121972 17th November 2017 9:08 PM

Q1WHAT IS NEED OF RESISTANCE IN CIRCUIT   Q2 WHY THE HEAT IS GENRATED WHEN CURRENT IS FLOW   Q3-DERIVE THE FORMULA OF CALCULATING TOATAL RESISTANCE IN PARALLELAND SERIES   Q4-WHY THE CURRENT IS NOT STABLE BUT VOLTAGE IS STABLE

Asked by amolshukal.2001 20th November 2017 9:15 PM

How can an electric heater designed for 220 V be adopted for 110V without changing length of the coil and without change in consumed power Plz answeer in simple language

Asked by lovemaan5500 1st December 2017 4:06 PM

Actually this is off topic provided by me............but i want to know the proper difference to resistance and resistivity. .......please give a detailes and appropriate answer

Asked by Madhulika 1st December 2017 5:11 PM

How external resistor  R is connected in parallel to the electrodes of the cell

Asked by lovemaan5500 4th January 2018 7:19 PM

7th ques

Asked by lovemaan5500 13th January 2018 5:48 PM

Explain briefly why the filament of an electric bulb is coiled.

Asked by bdroy_2014 1st February 2018 7:40 PM

can you give a detailed explanation on formulae  r=p l/a i need the answer quickly before 02:00

Asked by Anirudh 4th February 2018 11:11 AM

write an expression connecting the resistance of a wire and specific resistance of its material . state the meaning of symbol used.

Asked by Khantahseen7866 18th February 2018 10:05 PM

Which has higher resistanc a 50W lamp bulb or a 25W lamp bulb and how many times ?

Asked by gpnkumar0 28th February 2018 10:21 PM

Out of 60 W and 40 W lamps, which one has higher resistance when in use

Asked by gpnkumar0 28th February 2018 10:26 PM

Find the value of R

Asked by venkat 28th February 2018 11:45 PM

Find the value of x/5 from fig

Asked by venkat 1st March 2018 12:04 AM

Give reasons for using  Copper in makin connectiong wires Tungsten in making filament of a bulb

Asked by lovemaan5500 13th March 2018 6:48 AM

A wire of 9ohm having a lengh of 30 cm is tripled on itself  What is new resistance

Asked by lovemaan5500 13th March 2018 7:25 AM

resistance of a metal wire of length 1meter is 26ohm at 20 degree celsius Diameter is 0.3mm  What will be the resistivity .?

Asked by sunilviswari7 13th March 2018 10:44 PM

pls explain

Asked by gpnkumar0 14th March 2018 9:39 PM

Q .S student veryfing Ohm,s law computed the value of resistnce of a resistor for each set of onservation . However, the values of the resistance were slightly different from the actual value . Is his expt. wrong? Justify(2marks)

Asked by sucharitasahoo1 15th March 2018 3:08 AM

Q . What is likely to happen and it would effect the value of resistance passing the current for a longer time ?

Asked by sucharitasahoo1 15th March 2018 3:16 AM

A 10 ohm thick wire is stretched so that its lengh becomes 3 times  Calculate resistance oof new wire

Asked by lovemaan5500 15th March 2018 7:17 AM

Electric current flowing through a circuit is inversely proportional to resistance.When the resistance is 2 ohms,current is 3 amperes.Find the following:- (a)The resistance when the current flow is 0.5,1.2 and 2 amperes respcctively. (b)The current flow in a circuit when the resistance is 1.2,2.4 and 30 ohms respectively

Asked by nathsantanukumar 9th May 2018 6:02 PM

what happens to the resistance of a conductor when (a) length is doubled  (b) area is doubled (c) length doubled and area is halved  (d) radius is doubled (e) diameteris doubled

Asked by vamsi14102003 22nd May 2018 10:58 AM

CBSE X Physics

Asked by riyamaths 30th May 2018 7:15 PM

CBSE X Physics

Asked by riyamaths 30th May 2018 7:16 PM

Please answer ques 9 given on the photo.

Asked by riyamaths 31st May 2018 8:18 PM

State which has a higher resistance .A 50 Watt or a  25 Watt lamp .Also find the ratio of their resistances.

Asked by riyamaths 1st June 2018 9:22 AM

Power of electric heater is1200W when connected to240V supply. If the resistivity and area of cross section of wire is 10 to the power minus 5 ohm meter and 0.4mm square . If the radius of one turn is 7 mm . Find the number of turn in present coip

Asked by Pv9018590 26th June 2018 4:30 PM

Area of cross section of a conductor is increased two times if its resistance is 20 ohm. Find the new resistance.

Asked by agraharianiruddha 28th June 2018 4:54 PM

Question 17

Asked by tiwarishubham635 15th July 2018 12:59 PM

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30 ohms at 0°c what is the resistance of carbon and aluminium wire at 0°c so that the resistance of the combination does not change with temperature ( alpha for carbon = -0.5×10^-3℃^-1 and alpha for aluminium = 4+×10^-3℃^-1

Asked by Jalajkhede11 24th July 2018 10:04 AM

A 240 V ac mains circuit to which a number of appliances are connected & switched on. 240 ac-Fan(1.2KW)-Refrigerator(200 watt)-two bulbs(60w each,parallely) 1. Calculate the power supplied to the circuit. 2.calculate a) The current in the refrigerator. b) The energy used by the fan in 3 hours c)The resistance of filament of one bulb.

Asked by agraharianiruddha 26th July 2018 7:15 PM

A coil is needed to operate an arc lamp of 150 V, 50 Hz. The lamp of resistance of 5 ohms when running at 10A. Find inductance of the choke coil, if the same arc lamp is to be operated on 160 V, DC. What is the additional resistance required? Compare the power losses in each case.

Asked by lekhakarthikeyan 29th July 2018 4:16 PM

A galvanometer coil of resistance 50 ohm shows full deflection at 10 micro ampere.Resistance to be added,for the galvanometer to work as an ammeter of range 10 mega ampere is

Asked by aiswaryapbindhu3 8th August 2018 11:35 PM

Ques 5 It is multiple answer ques with more than one options correct

Asked by rbhatt16 23rd August 2018 7:53 AM

If a copper wire is stretched to make it a cross-sectional radius 0.1% thinner than what is the percentage increase the resistance

Asked by 2238750243078948 31st August 2018 6:02 PM

Q1:In an experiment of veificaion of Ohm's Law,following observations are obtained. Potential Difference V (in volt)=0.5,1.0,1.5,2.0,2.5 Current I(in ampere)=0.2,0.4,0.6,0.8,1.0 Q1a:Draw a V-I graph. Q1b:The potential Difference V when the current I is 0.5A Q1c:The current I when the potential difference V is 0.75V. Q1d:The resistance in circuit. Q2:Two wires of the same material and same length have radii 1mm and 2mm respectively.Compare:a.Their resistances and b.Their specific resistances. Q3:A wire of resistance 3 ohm and length 10 cm is stretched to length 30 cm.Assuming that it has a uniform cross section,what will be its new resistance? Q4:A wire of resistance 9 ohm having length 30 cm is tripled on itself.What is its new resistance?

Asked by kaursukhjindersukh 4th September 2018 3:45 PM

when radius of wire is doubled what will be the ratio between old and new resistance

Asked by bharadwajlucky26 14th September 2018 4:05 PM

Derive the ratio between original and new resistance when a wire is tripled on itself?

Asked by bharadwajlucky26 14th September 2018 4:37 PM

What will be the resistance of a 6m long wire  but with4times the area of cross section?

Asked by bharadwajlucky26 14th September 2018 4:39 PM

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30 ohm at 0degree Celsius. what is the resistance of carbon and aluminium wire at 0 degree Celsius so that the resistance of the combination does not change with temperature

Asked by khedejalaj7 24th September 2018 10:47 AM

how electricity passes through a area of cross section

Asked by kiransudhakommuru 12th October 2018 2:37 PM

Earth have how many capistance and resistance

Asked by Ankur.samanta777 2nd November 2018 12:51 AM

CBSE X Science

Asked by guptaabhinav0809 23rd November 2018 10:42 PM

What is resistivity

Asked by gurpreetsandhu97793 29th November 2018 4:53 PM

How solve problems related to resistance

Asked by randhirsingh 1st January 2019 6:36 PM

CBSE X Physics

Asked by rs1702 4th January 2019 2:13 PM

A metal wire of resistance of 6Ω is stretched so that its length is increased to thrice its original length. Calculate its new resistance.

Asked by om.chaudhari1673 23rd January 2019 4:43 PM

Please answer the following question with explanation

Asked by deepakudgiri29 23rd January 2019 5:38 PM

Electric current creates heat in the resistor. Explain

Asked by vijaywakude22 31st January 2019 8:37 PM

A bulb is rated as 60W , 220V . what does it mean?

Asked by tannurocks1901 7th February 2019 6:59 PM

CBSE X Physics Electricity

Asked by sameekshyakar 8th February 2019 7:33 PM

In a circuit diag. A cell of 9V and internal resistance o.5 ohm is connected across a resistor A of 2 ohm in series and two resistors 2 ohm and 6 ohm in parallel.FIND: total resistance total current current in 6 ohm resistor P.D. across the terminals of the cell.

Asked by malapandey8278 11th February 2019 12:36 PM

The combined resistance of galvanometer of resistance 500 ohm and shunt is 25 ohm calculate the value of shunt

Asked by ashraf.ma4444 22nd February 2019 11:02 AM

An electric bulb rated for 200w and 100v is connected to a circuit having a 200v supply. What is the resistance R that must be put in series with the bulb so that the bulb draws 200w?

Asked by saradamahapatra9999 7th March 2019 10:29 AM

How will the resistance change if the length of the wire is doubled?

Asked by ms0851000 11th March 2019 6:55 PM

How will the resistance of a wire change if the area of cross section of wire is increased to 3 times?

Asked by ms0851000 11th March 2019 7:03 PM

A copper wire ha a diameter of 0.5mm and a resistivity of ohm cm. How much of this wire will be necessary to make a 10 ohm coil? How much does the resistance change if the diameter is doubled?

Asked by adalroshan2464 28th March 2019 2:54 PM

Plz explain me while solving it, that in final step how do we choose the final R,in final step for V=RI

Asked by vishakhachandan026 29th March 2019 4:12 PM

Explain it with reasons plz

Asked by vishakhachandan026 1st April 2019 8:31 AM

please answer both of these question soon

Asked by defence 4th April 2019 7:20 PM

a given length of a wire is doubled of itself and this process is repeated once again. by what factor does the resistence of the wire changes

Asked by ajayrath7 4th April 2019 7:44 PM

Please find the attached question,

Asked by ajayrath7 6th April 2019 10:01 AM

two wires of same material has length in ratio 1:2. If the difference in their series and parallel equivalent is 21 ohm then calculate the resistances of the wire.

Asked by Aritra 16th April 2019 11:43 PM

A battery of 5V and internal resistance 1ohm is connected to a combination 8ohm and 11ohm connected in series with each other. Calculate the current in the circuit.

Asked by nibedita.behera.0308 20th April 2019 11:02 AM

why is resistance directly proportional to the termperature ina conductor

Asked by MUSKAN 1st May 2019 8:32 PM

Two light bulbs are marked 230 V; 75 W and 230 V; 150 W. If the first bulb has a resistance R, then the resistance of the second is?

Asked by Archana 10th May 2019 7:59 PM

A conductor has a length of 2 0 m and a radius of 3 0 mm If the resistance is R= 100Ω, calculatethe new resistance if the same material has: (a) length=6 0 m and r=6 0 mm (b) length=1 0m and r=1 0mm ... If the resistance is R=100Ω, calculate the new resistance if the same material has: ...  (a) length = 6.0m and r=6.0mm(b) length=1.0m and r= 1.0mm.

Asked by bcnandi 12th May 2019 2:14 PM

What resistance must be added in series to a circuit containing a 33 ohms resistor in order to draw 2.0 Amps of current from a 120 volts source?

Asked by bcnandi 12th May 2019 4:09 PM

A wire of length 10 cm is bent in the form of a circle of radius 2 mm. Calculate equivalent resistance along any two diametrically opposite points if total resistance of wire was 4 ohm

Asked by shailendra.ca1976 16th May 2019 9:45 PM

How to solve Q63

Asked by tps.mjmdr 16th May 2019 10:24 PM

From the diagram, determine i) the equivalent resistance of the entire circuit ii) the current through each resistor iii) th total currnt from the power supply iv) the voltage drop across each resistor PLEASE REPLY AS SOON AS POSSIBLE

Asked by piyushmalik024 18th May 2019 10:12 AM

find unknown resistance X, if no current flows through AO

Asked by shaileshbhagat82816 21st May 2019 9:45 PM

An electric bulb and heater are rated as (100watt-220volt) and (1000 watt-220v) respectively . Compare their resistance.

Asked by Anjukayal86477 23rd May 2019 2:38 PM

Difference between resistance and resistivity

Asked by adityarajni6 23rd May 2019 9:12 PM

how to find range of galvanometer when current and resistance is given

Asked by krvrvijai 27th May 2019 2:05 PM

GIVE THE EFFECTIVE RESISTANCE BETWEEN   A   and   B   ( all resistance in the figure are 16 ohm ) OPTIONS  1) 1 ohm 2) 2 ohm 3) 3 ohm 4) 4 ohm

Asked by ranjan.rr366 27th May 2019 9:12 PM

A resistance wire made from German silver has a resistance of 4.25 ohm. Calculate the resistance oi another wire, made from the same material such that its length increased by 4times and area decreased by 3times.

Asked by sudhma3u 31st May 2019 7:12 AM

To find rarional btw potential difference and current

Asked by Gaganyadav0037 3rd June 2019 5:30 PM

what is difference between resistance and resistivity

Asked by ashishaman25082004 21st June 2019 2:17 PM

if resistance is a property of conductor then how does it has magnitude .If it is possible for a property to have magnitude then plz give some other examples of such kind for my better understanding

Asked by ashishaman25082004 21st June 2019 7:09 PM

Please explain Ans is 8 ohm

Asked by valavanvino1011 28th June 2019 9:06 PM

Find the resistance between the points : 1) A and B  2) A and C

Asked by prakriti12oct 17th July 2019 9:11 PM

Length of wire L and its resistance is R now length is increased by 10 time than resistance becomes 100 ohm than the value of R=?

Asked by Arjanmodhwadiya15 17th July 2019 10:49 PM

Find the equivalent resistance between the points a and b

Asked by prakriti12oct 18th July 2019 9:10 AM

Which is correct graph

Asked by Prashant DIGHE 18th July 2019 5:18 PM

What is value of R

Asked by Prashant DIGHE 19th July 2019 5:09 PM

What is the value of R

Asked by Prashant DIGHE 22nd July 2019 3:45 PM

determine the resistance of a copper wire having a length of 1 km and diameter of 0.5 mm

Asked by mintosingh935 23rd July 2019 8:50 PM

Why does the glow on bulb increases with the increase in resistance of the filament of the bulb with the increase in temperature (when resistance is inversely proportional to conductance)?

Asked by nidhisingh200418 24th July 2019 12:44 AM

A coil takes a current of 2.0A and 200 watt power from an alternating current source of 220 volt , 50 Hertz . Calculate the resistance and inductance of the coil

Asked by hasnain.hossain121 24th July 2019 11:25 AM

Solve

Asked by adjacentcalliber10 25th July 2019 12:46 PM

When the wire is streched 3 times the length then the length increase and the area of cross section  also decrease therefore the resistance increase.

Asked by vedantkulkarni499 6th August 2019 7:51 PM

Urgent! please solve the problem in the given image with steps.

Asked by miaowmira1900 12th August 2019 1:21 AM

CBSE XII Science Chemistry Electrochemistry

Asked by lovemaan5500 13th August 2019 5:47 PM

Please solve the problem in the picture as soon as possible.... with  steps.

Asked by miaowmira1900 16th August 2019 1:35 AM

here cut the wire not the power of resistance...so the resistant of the pieces of wire remain same...isn't it..???

Asked by prasantasenapoti98 28th August 2019 6:03 PM

What happens to the Resistance if the given wire is stretched and the length gets doubled and the area of cross section gets halved.

Asked by aashimegh 7th September 2019 10:13 PM

NEET NEET Chemistry Redox Reactions and Electrochemistry

Asked by Balbir 8th September 2019 4:17 PM

NEET NEET Chemistry Redox Reactions and Electrochemistry

Asked by Balbir 9th September 2019 6:02 PM

You have three resistors of value 2 ohms 3 ohms and 5 ohms how will you join them so that total residence will more than 7 ohms

Asked by rahulkumar720925 10th September 2019 11:03 AM

Resistance of 20ohm, 20ohm and 30ohm are connected in parallel.what resistance must be added in series with the combination to obtain a total resistance of 10ohm.if the complete circuit expands a power of 0.36KW, Find the total current flowing. (Ans 2.5ohm , 6A)

Asked by unshad786 13th September 2019 12:24 PM