# Solved Problems-2

Problem-2
If  A/m2, calculate the current passing through
(a) A hemispherical shell of 20 cm radius
(b) A spherical shell of 10 cm radius
Solution
Total current is given as

Here,

(a) Total current passing through a hemispherical shell of 20 cm radius is,

(b) Total current passing through a spherical shell of 10 cm radius is,