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Physics
The electrostatic force between the metal plate of an isolated parallel plate capacitor C having charge Q and area A, is
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Q. The electrostatic force between the metal plate of an isolated parallel plate capacitor $C$ having charge $Q$ and area $A$, is
NEET
NEET 2018
Electrostatic Potential and Capacitance
A
inversely proportional to the distance between the plates.
52%
B
independent of the distance between the plates.
26%
C
proportional to the square root of the distance between the plates.
12%
D
linearly proportional to the distance between the plates.
9%
Solution:
For isolated capacitor $Q =$ Constant
$F_{\text {plate }}=\frac{Q^{2}}{2 A \varepsilon_{0}}$
$F$ is Independent of the distance between plates.