Calculate the e.m.f of the cell in the above circuit if its internal resistance is negligible
- 12 V
-
8 V
- 2 V
- 36 V
The correct answer is: B
Explanation
1/R = 1/R1 + 1/R2 = 1/3 + 1/6
= 3/6
∴ R = 6/3 = 2
E = I(R + r) = 4(2 + 0) = 8v
There is an explanation video available .