Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

2 conducting wires of the same materialand of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. the ratio of heat produced in series and parallel combinations shall be?
Asked by LakshmiSriram | 29 Sep, 2013, 12:38: AM
Expert Answer
The wires are of same material, equal lengths and diameters. Hence, the resistance of both wires is same, say R.
 
When they are connected in series:
The voltage across each is V/2 and current is I.
Thus, total heat produced is;
 
 
When they are connected in parallel:
The voltage across them is V and current is I/2
Thus, the heat produced is;
 
 
Thus, the ratio of heat in series and parallel is;
Hs/Hp = 1
Answered by Romal Bhansali | 29 Sep, 2013, 10:20: AM
Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment

Concept Videos

Application Videos

Answered Unanswered My Questions My Answers
CBSE 10 - Physics
active attachment
Asked by ruparus | 04 Nov, 2022, 09:52: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
if one microampere current flows through a conductor for 10 seconds how many electrons will pass at the point of cross section
Asked by ruparus | 03 Nov, 2022, 10:02: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
In a household five tube lights of 40 volt each are used for 5 hours and electric press of 500 volt for 4 hours everyday. Calculate the total energy consumed by the tubelight and press in a month of 30 days
Asked by ksheluka41 | 03 Nov, 2022, 05:33: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
& Resistances of three resistors are given as R, = 10 2, R= 20 2 and R, = 30 12. Calculate the effective resistance when they are connected in series. Also calculate the current flowing when the combination is connected to a 6 V battery.
Asked by agrimabhatt | 01 Nov, 2022, 12:26: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
What is the basic principle of Ohm's law?
Asked by sr558079 | 27 May, 2022, 01:40: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
A wire of length 22.5 cm and resistance was 20 © and the diameter was 0. 3mm then what is the resistivity  of the material .  
Asked by hgiri2006 | 06 May, 2022, 10:28: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
what is volt
Asked by dagurankur03 | 08 Apr, 2022, 09:56: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
why does need to maintain the current in a given electric circuit by expanding its energy stored in it?
Asked by ragavarshinik07 | 30 Mar, 2022, 07:17: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
formula of equivalent resistance in parallel and series'
Asked by priyatinsola02 | 20 Mar, 2022, 11:26: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
what is formula for Resistance in series and parallel
Asked by topperlearningforcontent | 23 Feb, 2022, 11:34: AM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
×