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in Physics by (24.6k points)
A parallel-plate capacitor is clamped to a stand such that its plates are vertical. It remains connected to a cell through a centre-zero galvanometer. A metal sheet which is parallel to the plate of the capacitor and whose thickness is slightly less than the seperation between these plates is now allowed to fall under gravity though the plates, wihtout touching them.
In the entire process of the metal sheet passing through the plates, which of the following statements will not be correct ?
A. Its gain in kinetic energy will be less than its loss in gravitational potential energy.
B. some heat will be produced in the electrical circuit
C. The cell will lose some electrical energy but never gain any energy
D. The current through the cell will reverse in direction at some point.

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1 Answer

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by (24.9k points)
Correct Answer - C

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