Two small conductors carrying charges 10 and 20 nano coulomb respectively are separated 0.3
apart in air .find the electric field at a point midway between them.
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ANSWER
V=
r
1
kq
+
r
2
kq
=9×10
9
(
0.01
10×10
−6
+
0.01
20×10
−6
)=27MV
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