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Question


Two conductors are placed at large distance, they are connected by wire & switch, find loss in energy of system (after switch is closed)

A
20 nJ
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B
zero
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C
10 nJ
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D
7 nJ
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Solution

The correct option is B zero
We know, V=QC
Calculating we get V1=5 V and V2=5 V
Both conductors are at some potential, no transfer of charge, system was at minimum energy, hence no loss of energy will take place.

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