Home Physics Electrostatics Potential & Capacitance Mix In H atom, an electron is rotating around th…
Physics Electrostatics Potential & Capacitance Mix MCQ (Single Correct)

In H atom, an electron is rotating around the proton in an orbit of radius r. Work done by an electron in moving once around the proton along the orbit will be -

A
ke/r
B
ke 2 /r 2
C
2πre
D
zero

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Verified by Experts
The correct answer is:
D

ω=

ω = 0

Angle between force and disp. = 90° or workdone by conservative force round the trip will always be zero.

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