```                   a point charge q is placed at the center of an uncharged conducting shell of inner radius R and outer radius 2R. if the point charge is removed from the centre of the shell, to infinity work done by electric force
```

one year ago

Share

```                                        $\small V_{\infty}=0\\ V_{inside}=(-Q/4\pi \epsilonR +Q/4\pi \epsilon2R)=-Q/4\pi \epsilon2R$Because charge appearing on the inner surface will be -Q and since the charge was originally zero so charge on outside =+Q.$\small W=-\Delta V \\=>W=-(V_{\infty}-V_0)=V_{0}$Thanks & RegardsArun KumarIIT DelhiAskiitians Faculty
```
3 months ago

More Questions On Electrostatics

Post Question

Vouchers
To Win!!!
If electric field at a point would vary as r^(-2.5) then would gauss law still be valid?

no gauss law will not be valid because gauss law is valid only when electric field varies as r^(-2)

 Lokesh 5 months ago

For this you should go through the deduction of Gauss`s Law from Coulomb`s law. In Coulomb`s law the electric field itself varies as 1/r^2. Had that not been the case then we would have not...

 Pranjal K 5 months ago

Why is it so?

 siddharth singhal 5 months ago
A particle ‘A’ of mass m and charge Q moves directly towards a fixed particle ‘B’,which has charge Q. The speed of A is v when it is far away from B. The minimum separation between the...

Arun Kumar IIT Delhi Askiitians Faculty

 Arun Kumar 3 months ago

sir,can we deduce it by other alternative method except using conservation of energy?

 priyatosh 3 months ago
Why dF/dq is equal to zero for the force to be maximum in the problem below: A charge Q is divided into two parts of qand Q-q if the coulomb repulsion between them when they are seprated is...

IT IS BECAUZ THE AREA UNDER THE CURVE OF FORCE VS CHARGE GRAPH GIVE POTENTIAL AND DF/DQ GIVE TANGENT AT A PARTICULAR POINT AND IF SLOPE OF TANGENT AT A POINT IS 0 OR MINIMUM THEN FORCE WILL...

 FITJEE one year ago

It''s a basic result. For a point to be local maximum, the tangent at that point must be zero. Tangent is given by dF/dQ. Approve if i helped :)

 Mujahid Ahmed one year ago

R/2 1/2

 saurabh gupta one year ago
what is magnetic moment

u=ia

The magnetic moment of a magnet is a quantity that determines the force that the magnet can exert on electric currents and the torque that a magnetic field will exert on it. A loop of...

 VEERU YERRAYYA one year ago

The property of a magnet that interacts with an applied field to give a mechanical moment.and The magnetic moment of a magnet is a quantity that determines the force that the magnet can...

WHAT IS MECHANICAL WAVES.

A mechanical wave is a wave that propagates as an oscillation of matter , and therefore transfers energy through a medium . [ 1 ] While waves can move over long distances, the movement of...

 Sunil Kumar FP 4 months ago

A mechanical wave is a traveling disturbance. It carries energy from place to place while traveling through a certain material or substance which is known as medium of wave.

 P.Sai vardhini 4 months ago

A mechanical wave is a traveling disturbance. it carries energy from one place to another place while traveling through a certain substance which is known as medium of wave

 theja 4 months ago
the force acting on moving charge particle in a uniform magnetic field is (a) normal to magnetic field (b) at 45 degree from the magnetic field (c) parallel to the magnetic field

According to the lorentz law, the force on a moving particle in a magnetic field is given by So the force is perpendicular to the plane containing V and B and hence is perpendicular to both.

 Apoorva Arora 25 days ago
View all Questions »