Q.

Electric field and potential at a point due to a point charge are 100 v/m and 0.5 volt respectively. Then distance of the point from the point charge is

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a

2 cm

b

0.1 cm

c

5 cm

d

5 mm

answer is D.

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Detailed Solution

E=14πε0Qr2   and  V=14πε0Qr∴  r=VE=0.5100m=5mm
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