the electric intenstiy at a point 10cm away from a charge of 10coulomb which kept in air is_______
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Explanation:
Potential at surface = 50 V
V=
R
K.Q
50=
0.1
K.Q
KQ= 5
potential at 200 m from centre
V=
r
K.Q
V=
0.2
5
= 25 volt
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