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A +0.2 μC charge is at some point P in an electric field. Part A What happens if that charge is replaced by a +0.4 μC charge?
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As the amount of charge doubles from 0.2 μC to 0.4 μC, the amount of force experienced will also double
Force F = EQ
Since Q is doubled, the experienced Force will also double charge.
This force will be a disposing force since the charges are positive.