Question

A charge of ${10}^{-9}C$ moves from X to Z. Find the work done by the electric field due to the charge $Q=2C$ in moving the charge from X to Z. The value of coulomb's constant is $9\times {10}^{9}N{m}^2{C}^{-2}$.

• A. $0J$
• B. $150J$
• C. $300J$
• D. $560J$
• E. $1,000J$

Answer 1

The correct option is A $0J$

Here the potential energy at X and at Z , both are same so the change is potential energy will be zero. Since the work is the change in potential energy so the work done will be zero.