EASY
AS and A Level
IMPORTANT
Earn 100

In the circuit in Figure, the resistance has a resistance of 2000Ω, the capacitor has a capacitance of 1000μF and the battery has an e.m.f. of 12 V

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A circuit to charge and discharge a capacitor Calculate. The charge stored by the capacitor when it is fully charged.

Important Questions on Capacitance

EASY
AS and A Level
IMPORTANT

In the circuit in Figure, the resistance has a resistance of 2000Ω, the capacitor has a capacitance of 1000μF and the battery has an e.m.f. of 12 V

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A circuit to charge and discharge a capacitor Calculate  The current in the resistor when the switch is first connected to terminal Q.

EASY
AS and A Level
IMPORTANT

In the circuit in Figure, the resistance has a resistance of 2000Ω, the capacitor has a capacitance of 1000μF and the battery has an e.m.f. of 12 V

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A circuit to charge and discharge a capacitor. Explain what happens to the amount of charge stored on the plates in the moments after the switch is first connected to terminal Q.

EASY
AS and A Level
IMPORTANT

In the circuit in Figure, the resistance has a resistance of 2000Ω, the capacitor has a capacitance of 1000μF and the battery has an e.m.f. of 12 V

Question Image

A circuit to charge and discharge a capacitor The potential difference across the capacitor when it connected to Q side.

EASY
AS and A Level
IMPORTANT

In the circuit in Figure, the resistance has a resistance of 2000Ω, the capacitor has a capacitance of 1000μF and the battery has an e.m.f. of 12 V

Question Image

A circuit to charge and discharge a capacitor The current in the resistor when it connected to Q side.

EASY
AS and A Level
IMPORTANT

Show that the unit of the time constant (RC) is the second.

EASY
AS and A Level
IMPORTANT

A 400μF capacitor is charged using a 20 V battery. It is connected across the ends of a 600Ω resistor with 20 V potential difference across its plates.Calculate the charge stored on the capacitor.

EASY
AS and A Level
IMPORTANT

A 400μF, capacitor is charged using a 20 V, battery. It is connected across the ends of a 600Ω, resistor with 20 V,potential difference across its plates.

Calculate the time constant for the discharging circuit.

MEDIUM
AS and A Level
IMPORTANT

A 400μF capacitor is charged using a 20 V battery. It is connected across the ends of a 600Ω resistor with 20 V potential difference across its plates.

(c) Calculate the time it takes the charge on the capacitor to fall to 2.0mC.