Question

A charge is moved from point $A$ to point $B$. The work done to move unit charge during this process, is ______

• A. Potential at $A$
• B. Potential at $B$
• C. Current from $A$ to $B$
• D. Potential difference between $A$ and $B$

Answer 1

Answer: (D)

Potential difference between $A$ and $B$

Since Potential difference between two points $A$ and $B$ is equal to the work done in bringing a unit charge from $A$ to point $B$.

$V_B-V_A=\frac{Workdone}{Charge}=\frac{W}{Q}$