Question

an electron moves from point A where potential is zero at B point potential is 60 volt . if electron started from A with zero velocity. find the velocity of B​

Answer 1

Answer:

know that potential energy of a charge is given by U=qV where q is the charge and V is the potential of the point where charge is present.

Initial kinetic energy K

i

=0 since particle is at rest.

From conservation of mechanical energy-

K

f

+U

f

=K

i

+U

i

⟹K

f

+(−e)×70=0+(−e)×50

⟹K

f

=20e

⟹K

f

=1.6×10

−19

×20

⟹K

f

=3.2×10

−18

J

Answer 2

Explanation:

We know that potential energy of a charge is given by U = qV where q is the charge and V is the potential of the point where charge is present.Initial .