alleryStart learning →The same 1 microcoulomb on a 10 cm radius sphere gives what field at its surface?
A1 x 10^5 N/C
B3 x 10^5 N/C
C9 x 10^6 N/C
D9 x 10^5 N/C
Answer & Solution
Correct answer: D. 9 x 10^5 N/C
E = 9e9 x 1e-6 / (0.10)^2 = 9e3/0.01 = 9e5 N/C.
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