1.

In an electric field. electric potential at point A is 40 V and that at point B is 90 V. The work to be done in taking 2 C charge from point A to point B is …………….. .

Answer»

25 J
25 J
90 J
100 J

Solution :`V_B -V_A = W/Q`
`:. W = Q(V_B - V_A)`
`=(2) (90 -40) =100J`


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