# A hollow metallic sphere of radius 10cm is given a charge of 3.2×10^-9C. The electric field intensity at a point 4cm from the center is

Q. A hollow metallic sphere of radius 10 cm is given a charge of 3.2 × 10-9C. The electric field intensity at a point 4 cm from the center is

(a) 9 × 10-9 NC-1

(b) 288 NC-1

(c) 2.88 NC-1

(d) zero

Ans: (d)

Sol: As there is no charge inside the sphere , hence electric field intensity inside the sphere is zero .