Ask a Doubt
Request a call back

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

CBSE Class 10 Answered

problem sum
Asked by sweetynam | 18 Feb, 2009, 04:28: PM
answered-by-expert Expert Answer

Let the resistance of electric iron connected may be R.

We have R=R1||R2||R3

1/R= 1/100+1/50+1/500= (5+10+1)/500

R=31.25 ohms

Current through it,I=V/R=220/31.25=7.04 A

Answered by | 19 Feb, 2009, 01:53: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 10 - Physics
Pls answer fast... In a resistive circuit, if the current is increased to two times the percentage change in the amount of heat dissipated in the circuit would be a) 400% b) 300% c) 200% d) 100%
Asked by anubhutiupadhaya | 04 Mar, 2023, 03:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Equivalent resistance 
question image
Asked by praveenkumae975 | 06 Feb, 2023, 07:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Two wires of copper have the same length but cross-sectional area in the ratio of 3:1. The resistance of the thicker wire is 12 ohm. (a) Calculate the resistance of the thinner wire. (b) Find the equivalent resistance of both these wires, when they are connected (1) in series (ii) parallel (c) If both the wires are connected in parallel to a battery of 24 volt, then find out the ratio of heat produced in the thicker wire to the thinner wire identify the wire if both of them are connected to the same source for the same time duration.
Asked by swetalinasamantaray022 | 20 Jan, 2023, 10:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
When a glass rod is rubbed with a piece of silk it acquires +10 micro coulomb of charge. How many electrons have been transferred from glass to silk?
Asked by rcgm729 | 02 Jan, 2023, 10:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
active attachment
Asked by ruparus | 04 Nov, 2022, 09:52: PM
ANSWERED BY EXPERT 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 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 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 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 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 ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt