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Question

Physics Question on electrostatic potential and capacitance

The kinetic energy of an electron, which is accelerated in the potential difference of 100 V, is

A

1.6×10−17 J 1.6 \times 10^{ - 17} \, J

B

1.6×10−14 J 1.6 \times 10^{ - 14} \, J

C

1.6×10−10 J 1.6 \times 10^{ - 10} \, J

D

1.6×10−8 J 1.6 \times 10^{ - 8} \, J

Answer

1.6×10−17 J 1.6 \times 10^{ - 17} \, J

Explanation

Solution

KE = eV = 1.6×10−19×100=1.6×10−17 J 1.6 \times 10^{ - 19} \times 100 = 1.6 \times 10^{ -17} \, J