The electric field strength in the space between two closely spaced parallel disks is .This field is the result of transferring 3.9 × 109 electrons from one disk to the other.What is the diameter of the disks? (e = 1.60 × 10-19 C,
A) 3.0 cm
B) 1.5 cm
C) 4.5 cm
D) 6.0 cm
Correct Answer:
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