Electric field inside a cavity

[kartikwat]

I have read that electric field inside a cavity of irregular conducting surface having any charge is zero.how is this possible?

 

[Meir Achuz]

Is the charge inside the conductor or inside the cavity?

 

[kartikwat]

Is the charge inside the conductor or inside the cavity?

On Conducting surface

 

[Nugatory]

I have read that electric field inside a cavity of irregular conducting surface having any charge is zero.how is this possible?

Because it's a conducting surface, the charges are free to move around. Therefore, all points on the surface must be at the same potential; if they weren't, the freely moving charges would move from the high-potential areas to the low potential areas until the difference was neutralized.

Ok, so all the points on the surface are at the same potential. What's the electric field between two points with the same potential?

 

[sardar]

This is possible due to the principle of electrostatic shielding. When a conducting surface is irregular, the charges on the surface will redistribute themselves in such a way that the electric field inside the cavity is cancelled out. This is because the charges on the surface will create an equal and opposite electric field inside the cavity, effectively shielding it from any external electric fields. This is similar to how a Faraday cage works to block out external electric fields. Therefore, in the case of an irregular conducting surface, the electric field inside the cavity will be zero due to the redistribution of charges on the surface.