In the circuit in Figure, the resistance has a resistance of $2000\Omega$, the capacitor has a capacitance of $1000\mu \mathrm{F}$ and the battery has an e.m.f. of $12 \mathrm{V}$

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.

In the circuit in Figure, the resistance has a resistance of $2000\Omega$, the capacitor has a capacitance of $1000\mu \mathrm{F}$ and the battery has an e.m.f. of $12 \mathrm{V}$

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

In the circuit in Figure, the resistance has a resistance of $2000\Omega$, the capacitor has a capacitance of $1000\mu \mathrm{F}$ and the battery has an e.m.f. of $12 \mathrm{V}$

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

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

A $400\mu \mathrm{F}$ capacitor is charged using a $20 \mathrm{V}$ battery. It is connected across the ends of a $600\Omega$ resistor with $20 \mathrm{V}$ potential difference across its plates.Calculate the charge stored on the capacitor.

A $400\mu \mathrm{F}$, capacitor is charged using a $20 \mathrm{V}$, battery. It is connected across the ends of a $600\Omega$, resistor with $20 \mathrm{V}$,potential difference across its plates.

Calculate the time constant for the discharging circuit.

A $400\mu \mathrm{F}$ capacitor is charged using a $20 \mathrm{V}$ battery. It is connected across the ends of a $600\Omega$ resistor with $20 \mathrm{V}$ potential difference across its plates.

(c) Calculate the time it takes the charge on the capacitor to fall to $2.0\mathrm{mC}$.

A $400\mu \mathrm{F}$ capacitor is charged using a $20 \mathrm{V}$ battery. It is connected across the ends of a $600\Omega$ resistor with $20 \mathrm{V}$ potential difference across its plates.

(d) State the potential difference across the plates when the charge has fallen to $2.0\mathrm{mC}$.

A capacitor has a potential difference of $6.0 \mathrm{V}$ across its plates and stores $9.0 \mathrm{mJ}$ of energy. Which row in the table gives the capacitance of the capacitor and the charge on its plates?