There is a uniform electrostatic field in a
region. The potential at various points on
a small sphere centred at P, in the region,
is found to vary between the limits
589.0 V to 589.8 V. What is the potential
at a point on the sphere whose radius
vector makes an angle of 608 with the
direction of the field ?
(1) 589.5 V
(2) 589.2 V
(3) 589.4 V
(4) 589.6 V
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