Question

A group of six identical cells each of emf E and internal resistance r are joined in series to form a loop. The terminal voltage across each cells is

A)E

B)6E

C)Zero

D)E/6​

Answer 1

Answer:

Zero

Explanation:

Correct option is C: zero

Answer 2

The terminal voltage across each cell is zero

Therefore, option (C) is correct.

Explanation:

Given:

A group of 6 identical cells of emf E and internal resistance r are joined in series to form a loop

To find out:

The terminal voltage across each cell

Solution:

Let the current be i

Since the cells are connected in loop

Therefore, the net potential difference will be zero

Thus,

(E-ir)+(E-ir)+(E-ir)+(E-ir)+(E-ir)+(E-ir) = 0

or, 6(E-ir) = 0

or, E-ir = 0

The termianl voltage across each cell is

ΔV = E-ir = 0

Hope this answer is helpful.

Know More:

Q: Four identical cells each of emf 2V are joined in parallel providing supply of  current to external circuit consisting of two 15 resistors joined in parallel. The  terminal voltage of the equivalent cell as read by an ideal voltmeter is 1.6V.  Calculate the internal resistance of each cell?​

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