Question

Electric field intensity is 400 metre and what is at a distance of 2 metre from a point charge is equal to 100

Answer 1

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Electric Field Intensity of a point charge is given by:

Where

= Charge

= Distance from point charge.

We are given that the Electric Field Intensity is 400 V/m at a distance of 2 m. We have to find at what distance the Electric Field will be 100 V/m.

Let that distance be .

Here we are not altering the charge. So we can say:

Thus, The Electric Field Intensity will be 100 V/m at a distance of 4 metres from the point charge.