MEDIUM
JEE Main
IMPORTANT
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The charge on 4 μF capacitor in the given circuit is (in μC)

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Important Questions on Capacitor and Capacitance

MEDIUM
JEE Main
IMPORTANT

Four identical capacitors are connected as shown in the diagram. When a battery of 6 V is connected between A and B, the charge stored is found to be 1.5 μC. The value of C1 is

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MEDIUM
JEE Main
IMPORTANT

Figure shows five capacitors connected across a 12 V power supply. What is the charge on the 2 μF capacitor?

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MEDIUM
JEE Main
IMPORTANT

Three plates A, B and C are placed close to each other with +Q charge given to the middle plate. The inner surfaces of A and C can be connected to earth through plate D and keys K1 and K2. The plate D is a dielectric slab with dielectric constant K, then the charge that will flow through plate D when K1 is closed and K2 is open is

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MEDIUM
JEE Main
IMPORTANT

In the previous problem, when both the keys are closed, charge that will flow through key K1 will be,

Previous problem: Three plates A, B and C are placed close to each other with +Q charge given to the middle plate. The inner surfaces of A and C can be connected to earth through plate D and keys K1 and K2. The plates D is a dielectric slab with dielectric constant K, then the charge that will flow through plate D when K1 is closed and K2 is open is

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MEDIUM
JEE Main
IMPORTANT

In the circuit shown in the figure, initially K1 is closed and K2 is open. What are the charges on each capacitor? Now K1 was opened and K2 was closed (order is important), what will be the charge on each capacitor now? [C=1 μF]

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HARD
JEE Main
IMPORTANT

The figure shows two capacitors of capacitance 2 μFand 4 μF and a cell of 90 V. The switch K is such that when it is in position 1 the circuit ABCD is closed and when it is in position 2 the circuit BCEF is closed. The resistance of both the circuits is negligible so that the capacitor gets fully charged instantly. Initially, the switch is in position 1 Then it is turned in position 2. This makes one cycle. It is then again turned in position 1 and then in position 2. Now the two cycles are completed. Find the charge (in μC ) on the capacitor of capacitance 4 μF after two cycles.

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HARD
JEE Main
IMPORTANT

In the figure shown, find the e.m.f. ε for which the charge on 2 μF capacitor is 4 μC

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MEDIUM
JEE Main
IMPORTANT
A condenser having a capacity of 6 μF is charged to 100 V and is then joined to an uncharged condenser of 14 μF and then removed. The ratio of the charges on 6 μF and 14 μF and the potential of 6 μF will be