If the circumference of a sphere is 2 m, then capacitance of sphere in water could be

The $90 \mathrm{~pF}$ capacitor is connected to a $12 \mathrm{~V}$ battery. How many electrons are transferred from one plate to another?

If the plates of a charged capacitor are brought closer, then the $p$.($d$) between the plates will

If the charge on a capacitor is doubled, the value of its capacitance $C$ will be

One micro microfarad is equal to

While a capacitor remains connected to a battery and dielectric slab is applied between the plates, then

A capacitor of capacitance $C$ is charged to a potential $V$. It is then connected across an uncharged capacitor of capacitance $2C$. The final potential difference across the combination is:

Consider a capacitor - charging circuit. Let $Q_1$ be the charge given to the capacitor in time interval of $20 \mathrm{~ms}$ and $Q_2$ be the charge given in the next time interval of $20 \mathrm{~ms}$. Let $10 \mu \mathrm{Ccharge}$ be deposited in a time interval $t_1$ and the next $10 \mu \mathrm{C~charge}$ is deposited in the next time interval $t_2$. Then,

A capacitor of capacitance ${C_1} = 1\;\mu F$ can with stand maximum voltage ${V_1} = 6kV\;\left( {kilo - volt} \right)$ and another capacitor of capacitance ${C_2} = 3\mu F$ can withstand maximum voltage ${V_2} = 4\;kV.$ When the two capacitors are connected in series, the combined system can withstand a maximum voltage of

A spherical drop of capacitance 1 $\mu$F is broken into eight drops of equal radius. Then, the capacitance of each small drop is

The potentials of the two plates of capacitor are $+ 10V$ and $- 10\;V.$ The charge on one of the plates is $40\;C.$ The capacitance of the capacitor is