Class 12

19. Electric Potential And Capacitance question bank (Physics)

Practice 2,950 free Class 12 Physics - 19. Electric Potential And Capacitance questions with answers and step-by-step solutions.

Start free Book a demo
All Easy Hard Medium
Q1.

Two concentric spheres of radii \(R\) and \(r\) have positive charges \(q_1\) and \(q_2\) with equal surface charge densities. What is the electric potential at their common centre?  

(A)
\(\frac{\sigma}{\varepsilon_0}(R+r)\)
(B)
\(\frac{\sigma}{\varepsilon_0}(R-r)\)
(C)
\(\frac{\sigma}{\varepsilon_0}\left(\frac{1}{R}+\frac{1}{r}\right)\)
(D)
\(\frac{\sigma}{\varepsilon_0}\left(\frac{R}{r}\right)\)
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Q2.

The electric field in a region is given by \(\vec{E} = \left(\frac{A}{x^3}\right)\hat{i}\). An expression for the potential in the region, assuming the potential at infinity to be zero, is  

(A)
\(\frac{A}{2x^3}\)
(B)
\(\frac{2x^2}{A}\)
(C)
\(\frac{A^2}{2x}\)
(D)
\(\frac{A}{2x^2}\)
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Protected Questions

Unlock All 1360 Questions in 19. Electric Potential And Capacitance

Log in or sign up free to access every question with complete solutions, create chapter practice tests, and track your performance.

Sign in to unlock Create free account

Sign up free to access all 1,360 questions

Unlock every 19. Electric Potential And Capacitance question, generate papers, and practice at your own pace.

Start free