Two point charges, Q1= -1.0 ? C and Q2= +3.0 ? C, are placed as shown. In the fi

Question

Two point charges, Q1= -1.0 ?C and Q2= +3.0 ?C, are placed as shown. In the figure, the number of excess electrons in charge Q1is closest to:

A) 6.3 ? 1013

B) 2.0 ? 1013

C) 6.3 ? 1012

D) 2.0 ? 1011

E) 2.0 ? 1012

Ans: C

Please show all work on how to get answer!

Two point charges, Q1= -1.0 ?C and Q2= +3.0 ?C, are placed as shown. In the figure, the number of excess electrons in charge Q1is closest to: A) 6.3 ? 10^13 B) 2.0 ? 10^13 C) 6.3 ? 10^12 D) 2.0 ? 10^11 E) 2.0 ? 10^12 Ans: C Please show all work on how to get answer!

Explanation / Answer

Q1= -1X10^-6 Q2 = 3 X 10^-6 so, q1 will have an equilant charge of -1 micro coulumb excess, which is equal to n= excess / e e= charge of electron =1X 10^-6 / 1.6 X 10^-19 = 6.259 X 10^12

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