E VirtualDv 4. A spherical shell has an inner radius a and outer radius b, as shown. It is made of a material with resistivity p. A potential difference V is set up between the inner and outer surfaces of the shell, so that the current i flows radially out. In terms of given quantities: (a) what is the resistance R of the shell to this radial current flow? (b) what is the current density J through R? (c) ersity alhat is the electric field E between the surfaces? a E, J
E VirtualDv 4. A spherical shell has an inner radius a and outer radius b, as shown. It is made of a material with resistivity p. A potential difference V is set up between the inner and outer surfaces of the shell, so that the current i flows radially out. In terms of given quantities: (a) what is the resistance R of the shell to this radial current flow? (b) what is the current density J through R? (c) ersity alhat is the electric field E between the surfaces? a E, J
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VirtualDv
4. A spherical shell has an inner radius a and outer radius b, as shown. It is made of a material with
resistivity p. A potential difference V is set up between the inner and outer surfaces of the shell, so that
the current i flows radially out. In terms of given quantities:
(a) what is the resistance R of the shell to this radial current flow?
(b) what is the current density J through R?
(c)
ersity
alhat is the electric field E between the surfaces?
a
E, J
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