Select True or False for the following statements. The total charge on the outer

Question

Select True or False for the following statements.

The total charge on the outer surface of the large shell         is +3q.            
               The radial component of the electric field in the region         c < r < d is given by +4q/(4??0r2).            
               The radial component of the electric field in the region         r > d is given by +4q/(4??0r2).            
               The radial component of the electric field in the region         r < a is given by +3q/(4??0r2).            
               The total charge on the inner surface of the large shell         is +1q.            
               The total charge on the inner surface of the small shell         is -5q.            
               The total charge on the outer surface of the small shell         is -5q

A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d. The inner shell has a total charge of -1q and the outer shell has a total charge of +4q. Select True or False for the following statements. The total charge on the outer surface of the large shell is +3q. The radial component of the electric field in the region

Explanation / Answer

Keep in mind that electric field lines start on + charges and end on - charges

and there can be no field within either conductor else current would flow.

1) F no corresponding + charges for field lines

2) F all charge on inner shell will be on outer surface

3) F a Gaussian surface would enclose net charge

4) T Net charge enclosed is + q and all will be on the outer surface

5) T there is no field within either conductor

6) F (2q to equalize -q on inner shell)

7) T (a Gaussian surface would enclose no net charge)

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