Calculate the magnitude of the electric field intensity in vacuum at a distance of 25cm from a charge of 5 × 10-3C. [Take 1/4πε0]

A.

7.2 × 108NC-1

B.

1.8 × 108NC-1

C.

5.6 × 108NC-1

D.

3.6 × 108NC-1

E.

1.5 × 106NC-1

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Correct answer is A

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