Question

What is the work done in moving a charge of 0.4 C across two points having a potential difference of 8 V?

• A. 0.2 Joules
• B. 1.2 Joules
• C. 3.2 Joules
• D. 0.4 Joules

Answer 1

The correct option is C

3.2 Joules

$V=\frac{W}{q}$
Let V - Potential difference between two points
W - Work done
q - Charge
From this we can infer that,
$W=V\times q$
It's given that, Charge(q) = 0.4 C
Potential Difference(V) = 8V
Therefore, the work done(W) in moving the charge $=8\times 0.4Joules$
= 3.2 Joules