Question

When a 2$\mu$C charge is carried from point A to point B, the amount of work done by the electric field is 50 $\mu$J. What is the potential difference and which point is at a higher potential?

• A. $25V,B$
• B. $25V,A$
• C. $20V,B$
• D. Both are at same potential

Answer 1

The correct option is B $25V,A$

Work done by electric field to carry charge from A to B $W_{eq}=q(V_A-V_B)$
or $50\times {10}^{-6}=2\times {10}^{-6}(V_A-V_B)$
or $V_A-V_B=25V$
The answer is positive thus A is at higher potential.