Answer:
70
Step-by-step explanation:
Answer: Option A
In general, electric field strength E = (F)/q
E = q4πε0d2
⇒ 360 = 9×109×50×10−6d2
solving, we have d2 = 1250
putting d2 = 1250 into the second equation,
E = 9×109×120×10−61250
we have E = 864NC−1
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