4. All charges are of same magnitude 3uc and their polarities are indicated in the figure. If a = 2cm
and O=30°, find net electrostatic force on q1 due to other charges.
93
95
a 8a
2a
91
92
96
Answers
Answered by
0
Answer:
16.2×10
−3
N
The distance between two charges is r=
(2−1)
2
+(3−1)
2
+(1−1)
2
=
5
By Coulomb's law, the force between two charges is F=
4πϵ
0
1
r
2
q
1
q
2
=(9×10
9
)(
5
3×10
−6
×3×10
−6
)=16.2×10
−3
N
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