Auniform circular ring has charge q= 7.36 μc, and radius r = 3.33 cm. calculate the magnitude of the electric field at a distance of 4.20 cm along the axis of the ring.

Electric field,

Explanation:

It is given that,

Charge on the ring,

Radius of ring, r = 3.33 cm = 0.0333 m

Distance from axis of ring, x = 4.2 cm = 0.042 m

The electric field at the axis of ring is given by :

So, the magnitude of electric field is . Hence, this is the required solution.

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