Two point charges $Q$ and $- 2 Q$ are separated some distance. If the electric field at $Q$ is $E$ , the electric field at $- 2 Q$ is

E / 2

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E

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2 E

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1.5 / E

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Solution

The correct option is D $E / 2$
Two point charges $= Q$ and $- 2 Q$
electric field $= Q$ is $E$ .
$E$ $α$ $Q$
$\frac{E_{1}}{E_{2}} = \frac{Q}{2 Q}$
or, $E_{2} = \frac{E}{2}$

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