H2P-390

Electric field and potential gradient

H2 Physics · JC 2 · Hard · Electric field and potential gradient

An electron moves in a region of electric field from a point at

-15

V to a point at

25

V. Its kinetic energy at the starting point is

2.0\times10^{-18}

J. What is its kinetic energy at the final point? (Charge on electron

e = 1.6\times10^{-19}

C.)

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