Home
Class 12
PHYSICS
The work done in carrying a charge q onc...

The work done in carrying a charge q once round a circle of radius r with a charge Q at the centre is

A

`(qQ)/(4pi epsi_(0)a)`

B

`(qQ)/(4pi epsi_(0)a^(2))`

C

`(q)/(4pi epsi_(0)a)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
The electric potential at any point on circle at radius a due to charge Q at its centre is `V=1/(4piepsilon_0)Q/a`
It is an equipotential surface.
Hence, work done in carrying a charge q round the circle is zero.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Potential Energy As A System Of Charges|4 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Potential Energy In An External Field|4 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Potential Due To A System Of Charges|7 Videos

  • ELECTROMAGNETIC WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • MAGNETISM AND MATTER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The work done in carrying a charge Q_(1) once round a circle of radius R with a charge Q_(2) at the centre is

A unit positive charge is moved along the circumfer-ence of a circle of radius, r with a -5muC charge at the centre at the centre of the circle. Then, the work done in the process is "______" .

If a charge q is moving in a circle of radius r with speed v, then the equivalent current will be :

Refer to the arrangement of charges in Fig and a Gaussian surface of radius R with Q at the centre. Then

On ortating a point charge having a charge q around a chrage Q in a circla of radius r . The work done will be

Three equal point charges of charge +q each are moving along a circle of radius R and a point charge -2q is also placed at the centre of circle (as shown in figure). If charge are revolving with constant and same speed in the circle then calculate speed of charges