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Asked by r01raunak | 23 May, 2023, 10:24: AM
The question is guessed from the scribbling shown in the image as follows

" It is required to find the location of null electric field between the charges 30 μC and 40 μC if the distance between two charges is 20 m"

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Let us assume that at point P which is at a distance x m from 30 μC charge we have null electric field .

Let E1 and E2 be the electric field due to 30 μC and 40 μC charge respectively.

where K = 1 / (4 πεo ) is Coulomb's constant .

If we get null electric field at P , then E1 = E2

1.155 x = (20 -x )

2.155 x = 20

x = 20 / 2.155 = 9.28 m

Hence at a distance 9.28 m from 30 μC charge , we get zero electric field

Answered by Thiyagarajan K | 23 May, 2023, 11:32: AM

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