Question

4. 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 D. E​

Answer 1

Answer:

a

Explanation:

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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