1.

At a certain distance from a point charge the electric field is 500 V m^(-1)and the potential is 3000 V. The distance is

Answer»

6 m
12 m
36 m
144 m

Solution :`E = q/(4PI epsi_0 R^2)= 500 Vm^(-1)and V = q/(4pi epsi_0 r)= 3000 V rArr r = V/E = 3000/500 = 6 m`


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