A spherical metal shell of radius and a solid metal sphere of radius ( ) are kept far…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

A spherical metal shell

A

of radius

R_A

and a solid metal sphere

B

of radius

R_B

(

< R_A

) are kept far apart and each is given charge

+Q

. Now they are connected by a thin metal wire. Then (1)

E_A^{inside} = 0

(2)

Q_A > Q_B

(3)

\frac{\sigma_A}{\sigma_B} = \frac{R_B}{R_A}

(4)

E_A^{on\ surface} < E_B^{on\ surface}