Question 10
The work done in moving a charge from one point to the other is 20 J. If the potential difference between the points is to 10 V, the charge is:
Solution
The work done in moving a charge from one point to the other is 20 J= W.
The potential difference between the points is to 10 V $$= \triangle V$$
So, $$W= q\times \triangle V$$ , where q is charge in C
$$20 = q \times 10$$
$$q = 2C$$
Option B is correct.
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