How much work is done in moving a charge of 4 C across two points having a potential difference of 12 V?
We know that,
$$W = q \times V$$
Where q is charge , W is the work done and V is the potential difference .
As given work is done in moving a charge of 4 coulomb across two points having a potential difference of 12 volt.
q = 4 Coulomb
V = 12 Volt
Put all the values in the formula
$$W = 4\times12$$
W = 48 J
Option A is correct.
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