Question
Question: Diagram shows an imaginary cube of side a. A uniformly charged rod of length a moves towards right a...
Diagram shows an imaginary cube of side a. A uniformly charged rod of length a moves towards right at a constant speed v. At t = 0, the right end of the rod just touches the left face of the cube . The graph that best represents the change in electric flux through the cube versus time–
A
B
C
D
Answer
Explanation
Solution
f = 
, f = 
= 
\ f µ t
Initially charge enclosed will increase linearly and then decrease linearly. f is max. when total rod enters the cube at t = 