Multiple Choice
A solid sphere of radius a is concentric with a hollow sphere of radius b, where b > a. If the solid sphere has a charge +Q and the hollow sphere a charge of -Q, the electric field at radius r, where a < r < b, is which of the following, in terms of k = 4π0) -1?
A) kQ/r2
B) 2kQ/r2
C) kQ/a2
D) kQ/b2
E) kQ/b - a) 2
Correct Answer:
Verified
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