If force acting b/w two charges when placed in vacuum = F. Then force acting b/w two charges when placed in medium of dielectric constant k = F/k.
As dielectric constant of metals is infinity. so force b/w the chrges inside the metal should be 0. But in most of the books it is written that charges can not reside inside the conductor because like charges repel each other and move maximum distance a part i.e surface of the conductor. because charge can only reside on the surface of the conductor....
i find this explaination very contradictory.......... please help me.......
The statement written above is perfectly correct. The electric field inside any metal is zero because if there were any electric field inside the metal then the metal would melt spontaneously because of the force due to electric field acting on the free electrons of the metals.
What is the confusion?
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The concept of F= F in vaccum/K comes from the fact that E = E in vaccum /K and is ment for dielectrics and is a condition for of electrostatics ie. a condition when equillibrium is achieved. While when you talk of a charge placed in metal it will flow towards the urface and that does not comes under electrostatics
Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
Moderation Team
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