Physics - Online Test
Q1. A long string of charge λ per unit length passes through an imaginary cube of edge a. The maximum flux of the electric field will be
Answer : Option D
Explaination / Solution:
The maximum length of string that can be fit into cube is
which is equal to the length of body diagonal So the charge inside the cube is
So flux
Q2. If the diameter of earth is , then its capacitance will be
Answer : Option D
Explaination / Solution:
the capacitance of a spherical conductor of radius R is
