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The point charges Q and –2Q are placed at some distance apart. If the electric field at the location of Q is E.

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The point charges Q and –2Q are placed at some distance apart. If the electric field at the location of Q is E. Then, the electric field at the location of –2Q will be

(a) - E3 / 2

(b) - E

(c) - E / 2

(d)  -2E

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Correct option: (c) - E / 2

Explanation:

Field at Q is E So force on Q = QE

This force Will be applide on - 2Q. Also according to Coulomb's law. So, field,

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