The energy of a 100μF capacitor charged to 6kV is used to lift a 50kg mass (by powering a motor by energy of capacitor) without incurring any losses. What would be the greatest vertical height through which mass could be raised?
(Take g=10m/s2)
A
1.2mm
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B
3.6m
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C
0.6mm
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D
1.6m
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Solution
The correct option is B3.6m Given: C=100μF;m=50kg;V=6kV
According to question 100% energy of capacitor has been used to lift the mass.
So, applying energy conservation
⇒ Loss of Electrostatic Energy stored in capacitor = Gain in gravitational potential energy of mass