A hollow conducting sphere has radiiof 0.80 m and 1.20 m. The sphere carries a c

Question

A hollow conducting sphere has radiiof 0.80 m and 1.20 m. The sphere carries a charge of-500 nc.A point charge of +300 nC

is present at thecenter.

3) In Fig. 22.4, the surface chargedensity on the inner spherical surface is closest to:3)

A) zero

B) -4 ×10-8C/m2

C) +6 ×10-8C/m2

D) +4 ×10-8C/m2

6) At a distance D from avery long (essentially infinite) uniform line of charge, theelectric field

strength is 1000 N/C. For the field strength tobe 2000 N/C, the distance from the line wouldhave

to be:

6)

A) D/2 B)2D C) D/4 D)2D E) D/2

Explanation / Answer

A hollow conducting sphere has radii of 0.80 m and1.20 m. The sphere carries a charge of -500 nc. A pointcharge of +300 nC

is present at the center.

     D)+4×10-8 C/m2

6) At a distance Dfrom a very long (essentially infinite) uniformline of charge, the electric field

strength is 1000 N/C. For the field strength tobe 2000 N/C, the distance from the line wouldhave

to be:

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