Question

An $\alpha$ particle is placed in an electric field at a point have electric potential $5V$. Find its potential energy?

• A. $1.6\times {10}^{-18}J$
• B. $1.6\times {10}^{-14}J$
• C. $1.6\times {10}^{-12}J$
• D. $1.6\times {10}^{-10}J$

Answer 1

The correct option is A $1.6\times {10}^{-18}J$

We know that the charge on $\alpha -particle\left(q\right)=2e=3.2\times {10}^{-19}C$

And, Potential Energy $=Potential\times Charge=qV=1.6\times {10}^{-18}J$