Two concentric spherical shells of radius R₁ and R₂ have q₁ and q₂ charge respectively as sh

English

Gujarati

Hindi

2. Electric Potential and Capacitance

medium

Two concentric spherical shells of radius $R_1$ and $R_2$ have $q_1$ and $q_2$ charge respectively as shown in figure. How much charge will flow through key $k$ when it is closed

A

${q_2}\,\left( {\frac{{{R_1} + {R_2}}}{{{R_2}}}} \right)$

B

$\frac{{{q_1}{R_2} + {q_2}{R_1}}}{{{R_2}}}$

C

${q_2}\,\left( {\frac{{{R_2} - {R_1}}}{{{R_2}}}} \right)$

D

$\frac{{{q_1}{R_2} - {R_1}{q_2}}}{{{R_2}}}$

Solution

Potential at earthed conductor becomes zero

Standard 12

Physics

Share

Similar Questions

A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

medium

$A$ and $B$ are concentric conducting spherical shells. $A$ is given a positive charge while $B$ is earthed. Then :-

medium

A thin-walled, spherical conducting shell $S$ of radius $R$ is given charge $Q$. The same amount of charge is also placed at its centre $C. $ Which of the following statements are correct ?

hard

An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$

If the outer surface of the shell is earthed, then identify the correct statement(s)

medium

$(a)$ A conductor $A$ with a cavity as shown in Figure $(a)$ is given a charge $Q$. Show that the entire charge must appear on the outer surface of the conductor.

$(b)$ Another conductor $B$ with charge $q$ is inserted into the cavity keeping $B$ insulated from $A$. Show that the total charge on the outside surface of $A \text { is } Q+q$ [Figure $(b)$]

$(c)\;A$ sensitive instrument is to be shielded from the strong electrostatic fields in its environment. Suggest a possible way.

medium