Q. A parallel plate capacitor has circular plates of $0.08m$ radius and $1.0 \times 10^{- 3}m$ separation. If a P.D. of $100\ volt$ is applied, the charge will be
A) $1.8 \times 10^{- 10}C$
B) $1.8 \times 10^{- 8}C$
C) $1.8 \times 10^{- 20}C$
D) None of these
Explanation
(b) $Q = CV = \frac{\pi(0.08)^{2}\varepsilon_{0}}{1 \times 10^{- 3}} \times 100 = 1.8 \times 10^{- 8}C$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.