Question

If the charge 50C uniformly distributed in a volume 20m³ , then volume charge density is :-
a) 500cm-³
b) 50cm-³
c) 5cm-³
d) 25cm-³​

Answer 1

Explanation:

If ρ be volume charge density, Q=ρ.

3

4

πR

3

...(1)

Consider a Gaussian surface of radius r. Using Gauss's law the field at r is

E.4πr

2

=

ϵ

0

ρ.

3

4

πr

3

E=

4πϵ

0

R

3

Qr

using (1)

∴E∝r