If the distance between the plates of a capacitor having capacity $C$ and charge $Q$ is doubled then work done will be
If the distance between the plates of a capacitor having capacity $C$ and charge $Q$ is doubled then work done will be
- A
$\frac{{{Q^2}}}{{4C}}$
- B
$\frac{{{Q^2}}}{{2C}}$
- C
$\frac{{{Q^2}}}{{C}}$
- D
$\frac{{{2Q^2}}}{{C}}$
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A capacitor $C = 100$ $ \mu F$ is connected to three resistors each of resistance $1$ $kW$ and a battery of emf $9$ $V$. The switch $S $ has been closed for long time so as to charge the capacitor. When switch $S $ is opened, the capacitor discharges with time constant.....$ms$
A capacitor $C = 100$ $ \mu F$ is connected to three resistors each of resistance $1$ $kW$ and a battery of emf $9$ $V$. The switch $S $ has been closed for long time so as to charge the capacitor. When switch $S $ is opened, the capacitor discharges with time constant.....$ms$
Electric flux through surface $s_1$ :-
Electric flux through surface $s_1$ :-
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A given charge is situated at a certain distance from an electric dipole in the axial position experiences a force $F$ . If the distance of the charge is doubled, the force acting on the charge will be
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