Year: 2021
Topic: Electrostatic potential and capacitance
Time :
1.
Two charged spherical conductors of radius R
1
and R
2
are connected by a wire. Then the ratio of surface charge densities of the spheres (σ
1
/σ
2
) is
(1). \(\displaystyle \frac{R_1}{R_2}\)
(2). \(\displaystyle \frac{R_2}{R_1}\)
(3). \(\displaystyle \sqrt{\frac{R_!}{R_2}}\)
(4). \(\displaystyle \frac{R_1^2}{R_2^2}\)