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Principle of Superposition

A charge q1 e...

Question

A charge $q_{1}$ exerts some force on a second charge $q_{2}$ . If third charge $q_{3}$ is brought near, the force of $q_{1}$ exerted on $q_{2}$

Decreases

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Increases

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Remains unchanged

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Increases if

q_{3}

is of the same sign as

q_{1}

and decreases if

q_{2}

is of opposite sign

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Solution

The correct option is C Remains unchanged
The force will still remain $\frac{q_{1} q_{2}}{4 π ε_{0} r^{2}}$

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45 N

q_{2} = 10^{- 5} C

0.2 m

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