Quiz
1. Q 1 and Q 2 are two point charges, which are a distance 8 cm apart. The force acting on Q 2 is given by , N.
Now we replace Q 2 with a charge of the same magnitude but opposite polarity, , and we place Q 3 a distance 24 cm away from Q 1. What is the vector of the force acting on Q 3?
, N
2. The intensity of the field due to a point charge Q 1 a distance cm away from it is V/m. What is the intensity of the field of a charge at a distance cm from it?
, V/m
3. The intensity of the field due to a line charge a distance cm away from it is V/m. What is the intensity of the field of the line charge at a distance cm from it?
4. Charge Q is uniformly distributed in a sphere of radius . How is the charge density going to change if this same charge is now occupying a sphere of radius ?
It will increase 4 times.
It will increase 64 times.
It will increase 16 times.
It will decrease 2 times.
5. A line charge C/m is located at , and is along the z-axis. Calculate the surface charge density ( ) and the location ( ) of an infinite planar charge distributed on the plane at , so that the total field at the point , m, is zero.
C/m 2 , m
C/m 2 ,
C/m 2,