Question

The capacity of a spherical conductor is 1ìF. Then its diameter would be(1) 1.8 metre (2) 4 1.8 10 metre  (3) 3 1.8 10 metre  (4) 18 metre

Answer 1

Answer:

If the capacitor of a spherical conductor =1pF

C=4πϵ

0

R

or, 1×10

−12

=2πϵ

0

×2R

or, 2R=

2πϵ

0

1×10

−12

=1.8×10

−5

m