Answer to Question #287712 in Electromagnetism for HassanHass

Question #287712

Two point charge Q1 and Q2 are 3m apart, and their combined charge is 20micro coulumb.

(a) if one repels the other with a force of 0.075N, what are the two charges?

(b) if one attract the other with a force of 0.525N, what are the magnitude of the charges?


1
Expert's answer
2022-01-16T13:10:27-0500

"q_1q_2=\\frac{Fr^2}k,"

a)

"q_1q_2=75,"

"q_1+q_2=20,"

"q_1=15~\\mu C," "q_2=5~\\mu C,"

b)

"q_1q_2=25,"

"q_1+q_2=20,"

"q_1=18.7~\\mu C," "q_2=1.3~\\mu C."


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