A charge +Q is placed at the centre of a circ | vedclass

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

Question

(B) The electric potential $V$ at a distance $r$ from a point charge $Q$ is given by $V = \frac{kQ}{r}$.Since the circular path is centered at $Q$,eve

Vedclass · Accepted Answer

Zero

Vedclass · Answer

(B) The electric potential $V$ at a distance $r$ from a point charge $Q$ is given by $V = \frac{kQ}{r}$.Since the circular path is centered at $Q$,every point on the circumference is at the same distance $r$ from the charge $Q$.Therefore,the electric potential at any point on the circular path is constant.Let $V_A$ be the potential at point $A$ and $V_B$ be the potential at point $B$. Since both points are on the circle,$V_A = V_B = \frac{kQ}{r}$.The work done $W$ in moving a charge $q$ from point $A$ to point $B$ is given by $W = q(V_B - V_A)$.Substituting the values,$W = q(\frac{kQ}{r} - \frac{kQ}{r}) = q(0) = 0$.Thus,the work done is zero.

$A$ charge $+Q$ is placed at the centre of a circular path of radius $r$. The work done to bring a charge $+q$ from one end of the diameter to the other end of the circular path in the electric field produced by charge $+Q$ is $.......$

Similar Questions

The figure shows lines of constant potential in a region where an electric field is present. The electric field at point $B$ is............

The angle between electric field lines and an equipotential surface is .........$^o$.

Prove that a closed equipotential surface with no charge within itself must enclose an equipotential volume.

Equipotential surfaces are given as shown. The electric field intensity is ........

Which of the following statements is not true?

Vedclass Test Series

Exam Paper Generator

Online Exam Module