Electric Field Due to a Ring Along the Axis

Q.

Electric field vs. distance along the axis is shown for a uniformly charged circular ring

Which of the following represents the complete graph?

1. 

2. 

3. 

4. 

Q. A ring of radius $R$ is charged uniformly with a charge $+Q$ . The electric field at any point on its axis at a distance $r$ from the circumference of the ring will be

1. $\frac{KQ}{r}$
2. $\frac{KQ}{r^2}$
3. $\frac{KQ}{r^3}(r^2-R^2{)}^{\frac{1}{2}}$
4. $\frac{KQr}{R^3}$

Q.

The distance of point P on the axis from the Centre of a uniformly charged circular ring where the electric field is maximum, is $2^{-n}R$(given radius of the ring is R). The value of n in decimal form is___

Q.
Uniformly charged ring is shown is figure, $E$ due to ring is maximum at

1. Centre
2. $\infty$
3. $\frac{R}{\sqrt{2}}$ distance from centre
4. $R$ distance from centre

Q. The magnitude of electric field always decreases as you move away from centre of uniformly charged ring.

1. True
2. False