In the circuit shown, each battery is of 5 V and has internal resistance of 0.2 ohm. What will be the reading of an ideal voltmeter connecting across the battery?

Asked by Topperlearning User | 24th Apr, 2015, 03:51: PM

Expert Answer:

Total emf of the circuit = 5 x 8 = 40 V (as all are in series)

Total resistance of the circuit = 8 x 0.2 = 1.6 ohm
Current in the circuit = begin mathsize 11px style straight I space equals space nε over nr space equals space fraction numerator 10 over denominator 1.6 end fraction space equals space 25 space straight A
end style
 
Reading of the voltmeter = begin mathsize 11px style straight V space equals space element of space minus space Ir space equals space 5 space minus space 25 space cross times space 0.2 space equals space 0 space straight V end style

Answered by  | 24th Apr, 2015, 05:51: PM