Question

30. A storage battery is connected to a charger for
charging with a voltage of 12.5Volts. The internal
resistance of the storage battery is 12. When the
charging current is 0.5 A, the emf of the storage
battery is:
(a) 13 Volts (b) 12.5 Volts
(c) 12 Volts (d) 11.5 Volts
35. A
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Answer 1

Answer:

Explanation:

Given A storage battery is connected to a charger for

charging with a voltage of 12.5 Volts. The internal

resistance of the storage battery is 1 ohm. When the

charging current is 0.5 A, the emf of the storage

battery is:

When the battery is charging

We know that

V = e + i r  

V = 12.5, i = 0.5, r = 1  

12.5 = e + 0.5 x 1

12.5 = e + 0.5

e = 12.5 – 0.5

e = 12 v

Answer 2

Answer:

The correct answer for this question is C. Because it is a case of charging of battery.