A solid conducting sphere of radius 2 cm has a charge of 8microCoulomb. A conducting spherical shell of inner radius 4 cm andouter radius 5 cm is concentric with the solid sphere and has acharge of -4 microCoulomb. What is the magnitude and direction ofthe electric field at r = 7 cm?

A)0
B)1 N/C radially outward
C)7.35 106 N/C radiallyoutward
D)7.35 106 N/C radiallyinward
E)3.56 107 N/C radiallyoutward
F)8 107 N/C radially outward

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above