Question

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

• A. $0.2J$
• B. $1.2J$
• C. $3.2J$
• D. $0.4J$

Answer 1

The correct option is C $3.2J$

$V=\frac{W}{q}$
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) $=0.4C$
Potential Difference(V) $=8V$
Therefore, the work done(W) in moving the charge $=8\times 0.4joules$
$=3.2J$