Practicing Success
Practicing Success
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Three charges +4q, Q and q are placed along x-axis at points, $x=0, l / 2$ and $l$ respectively. The value of Q to make the net force on q to be zero : |
4q $\frac{-q}{2}$ - 2q -q |
-q |
Force on Q is zero $\Rightarrow \frac{1}{4\pi \epsilon_0} \frac{4q^2}{l^2} + \frac{1}{4\pi \epsilon_0} \frac{qQ}{l^2/4}=0$ $\Rightarrow Q = -q$ |
