2. If a charge -150 nC is given to a concentric spherical 10shell and

1.	2. If a charge -150 nC is given to a concentric spherical 10shell and a charge +50 nC is placed at its centre then thecharge on inner and outer surface of the shell is
Answer» As you might know a neutral conductor contains equal number of positive and negative charges. When a charge say “+q” is placed inside a conductor it attracts the oppositely charged particles in the conductor and hence charge equal in magnitude but opposite in sign is induced on the conductor in this case “-q” But as the conductor is electrically neutral at the start, it will remain electrically neutral as there is no flow of charges. Therefore to balance the “-q” charge induced on the inner surface a charge of same magnitude and opposite sign is induced on the outer surface of the condutor. So the total charge on the conductor remains same as before i.e zero.

2. If a charge -150 nC is given to a concentric spherical 10shell and a charge +50 nC is placed at its centre then thecharge on inner and outer surface of the shell is

Answer»

As you might know a neutral conductor contains equal number of positive and negative charges.

When a charge say “+q” is placed inside a conductor it attracts the oppositely charged particles in the conductor and hence charge equal in magnitude but opposite in sign is induced on the conductor in this case “-q”

But as the conductor is electrically neutral at the start, it will remain electrically neutral as there is no flow of charges.

Therefore to balance the “-q” charge induced on the inner surface a charge of same magnitude and opposite sign is induced on the outer surface of the condutor.

So the total charge on the conductor remains same as before i.e zero.

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