The electrostatic potential on the surface of | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) For a uniformly charged spherical shell,the electrostatic potential inside the shell is constant and equal to the potential on its surface.Given:

Vedclass · Accepted Answer

$120 \ V, 120 \ V, 80 \ V$

Vedclass · Answer

(A) For a uniformly charged spherical shell,the electrostatic potential inside the shell is constant and equal to the potential on its surface.Given: Potential on the surface $V_{surface} = 120 \ V$ and radius $R = 10 \ cm$.$1$. At the centre $(r = 0 \ cm)$: Since $r $2$. At a distance $r = 5 \ cm$ from the centre: Since $r $3$. At a distance $r = 15 \ cm$ from the centre: Since $r > R$,the shell acts as a point charge. The potential is given by $V = \frac{kQ}{r}$.We know $V_{surface} = \frac{kQ}{R} = 120 \ V$,so $kQ = 120 	imes 10 = 1200 \ V \cdot cm$.Thus,$V_{r=15cm} = \frac{1200}{15} = 80 \ V$.Therefore,the potentials are $120 \ V, 120 \ V, 80 \ V$.

The electrostatic potential on the surface of a uniformly charged spherical shell of radius $R = 10 \ cm$ is $120 \ V$. The potential at the centre of the shell,at a distance $r = 5 \ cm$ from the centre,and at a distance $r = 15 \ cm$ from the centre of the shell respectively,are:

Similar Questions

$A$ spherical drop of liquid carrying charge $Q$ has potential $V_0$ at its surface. If two drops of same charge and radius combine to form a single spherical drop,then the potential at the surface of the new drop is (Assume $V=0$ at infinity.)

$A$ total charge $Q$ is distributed between two concentric spherical shells of radii $r$ and $R$ $(R > r)$ such that their surface charge densities are equal. What is the electric potential at their common center?

$A$ charge of total amount $Q$ is distributed over two concentric hollow spheres of radii $r$ and $R$ $(R > r)$ such that the surface charge densities on the two spheres are equal. The electric potential at the common centre is

$A$ regular hexagon of side $9 \ cm$ has a charge $5 \mu C$ at each of its vertices. The electric potential at its centre is $..........V$. $(k = 9 \times 10^9 \ Nm^2 C^{-2})$

The figure shows the electric field lines of a positive and a negative charge,respectively. Determine the sign of the potential difference $V_Q - V_P$ and $V_B - V_A$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module