Question

2. A ring made of non-conducting material and of radius ‘R’ has a charge of ‘+Q’

uniformly distributed on it. Which of the following statements is incorrect about the

Electric Field ‘E’ and Electric Potential ‘V’ at any point on the ‘axis’ of the ring at a

distance of ‘x’ from it’s center.​

Answer 1

Answer:

If we fill the gap then there will be no electric field at the center of ring

This signifies that electric field due to rest ring is equal to electric field due to gap and opposite in direction

so electric field due to gap=  

R  

2

 

Kq

​  

 

q=  

2πR

Qd

​  

 

thus electric field E=  

R  

3

 

KQd

​  

 

Hence E will be inversely proportional to R  

3

  and direction will be toward the gap

Explanation: