A radio is operated by eight cells each of e.m.f. 2.0V connected in series. If two of the cells are wrongly connected, the net e.m.f. of the radio is?

A. 8V
B. 10V
C. 12V
D. 16V

Correct Answer:

Option C = 12V

Explanation

Net e.m.f = (8 x 2) – (2 x 2)

= 12V

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