JEE Main · 2021 · 26 Feb 2021 · Shift 1 · Current Electricity

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In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at 15 V . The work done by the battery is ____ J.

Answer: 300

Solution

The work done by a battery in moving charge through a potential difference is given by

W = Q V

, where

Q

is the charge and

V

is the potential difference. Here,

Q = 20

C and

V = 15

V. Therefore,

W = 20 \times 15 = 300

JEE Main · 2021 · 26 Feb 2021 · Shift 1 · Integer answer

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