Approximate the field by treating the disk as a +6.1 c point charge at a distance of 21 cm answer in units of n/c.

Electric field,

Explanation:

It is given that,

Charge, Q = +6.1 C

Distance, r = 21 cm = 0.21 m

We need to find the electric field. It is given by :

So, the electric field at this distance is . Hence, this is the required solution.

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