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A circular copper ring of radius r, plac...

A circular copper ring of radius r, placed in vacuum, has charge q on it. The electric field intensity at the centre of the ring is `E_(1)`. The electric field intensity of the axis of the ring at a distance x from its centres is `E_(2)`. The value of `E_(2)` will be maximum when `x=x'`
What is the value of `E_(2)`?

A

`q/((x^(2)+r^(2))^(1//2))`

B

`(qx^(2))/((x^(2)+r^(2))^(3//2))`

C

`q/((x^(2)+r^(2))^(3//2))`

D

`(qx)/((x^(2)+r^(2))^(3//2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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