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(i) In an isolated system (neither connected to the terminal of a battery nor to any other source of charge e.g each) net charge remains constant. (ii) From two terminal of a battery or from two plates of a capacitor equal and opposite charges enter or leave. Question : Two capacitors of capacity 6muFand 3muFare charged to 100 V and 50 V separatelly and connected as shown. Now all the three swiches S_(1)S_(2) and S_3are closed. Which plate (s) form an isolated system .

Answer»

plate 1 and plate 4 separately
plate 1 and 4 jointly
plates 1 and 3 jointly
plates 2 and 3 jointly

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