Question

4. S In the presence of internal resistance of the source, which one of the following relations between potential difference (V) and e.m.f (E) is correct
A. E=0 B. E= V C.E>V DE<V​

Answer 1

Answer:

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Explanation:

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Answer 2

Given : In the presence of internal resistance of the source,

To Find : which one of the following relations between potential difference (V) and e.m.f (E) is correct

A.   E =0

B.   E = V

C.   E >V

D    E <V​

Solution:

E - Ir  = V

E = emf

I = Current flowing through circuit

r = internal resistance

V = Potential Difference

E - Ir  = V

=> E = V + Ir

=> E  > V

Hence correct option is C.   E >V  

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