Question

A storage battery of emf 8 volt and internal resistance 0.5 ohm is being charged by a 120 volt dc supply using a series resistor of 15.5 what is the terminal voltage of the battery during charging

Answer 1

Answer:

E=8V, internal resistance R

1

=0.5Ω

V=120V, resistance R

2

=15.5Ω

Effective voltage V

′

=V−E=112 V

I=

R

1

+R

2

V

′

=7 A

Voltage across R

1

=IR

1

=3.5 V

Terminal voltage =8+3.5=11.5 V

Series resistor in the charging circuit limits the current drawn from the external source.

Answered By

Aniket

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