The total charge on the inner surface of the large shell is -6 q . The total cha

Question

The total charge on the inner surface of the large shell is -6q.

The total charge on the outer surface of the small shell is -6q.
The total charge on the inner surface of the small shell is -6q.
The total charge on the outer surface of the large shell is +2q.
The radial component of the electric field in the region r > d is given by +2q/(4??0r2).
The radial component of the electric field in the region c < r < d is given by -2q/(4??0r2).
The electric field in the region r < a is zero

Explanation / Answer

The radial component of the electric field in the region r > d

total charge inside the -6-6+2+2 =-8q

electric field = -8q/(4??0r2).

b)

The radial component of the electric field in the region c < r < d is given by

total charge = 4q

electric field = 4q/(4??0r2).

c)

The electric field in the region r < a is zero

so correct answer is The electric field in the region r < a is zero

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