Capacitors with the exponential equation
Question 140S: Short Answer		

1.	A 10 F capacitor is charged to 5.0 V and then discharged through a 5 kW resistor.  Calculate the time constant for the circuit.

2.	How much energy is stored in the capacitor when it is fully charged?

3.	Calculate how long it takes for the p.d. across the capacitor to fall to 4.0 V.

4.	How much energy will have been transferred from the capacitor during this process?

5.	What will be the p.d. across the capacitor after 5.0 ´ 104 s?

6.	Calculate the time taken for 50% of the capacitor’s initial energy to go into heating in the resistor.

Capacitors with the exponential equation
Question 140S: Short Answer		

1.	A 10 F capacitor is charged to 5.0 V and then discharged through a 5 kW resistor.  Calculate the time constant for the circuit.

2.	How much energy is stored in the capacitor when it is fully charged?

3.	Calculate how long it takes for the p.d. across the capacitor to fall to 4.0 V.

4.	How much energy will have been transferred from the capacitor during this process?

5.	What will be the p.d. across the capacitor after 5.0 ´ 104 s?

6.	Calculate the time taken for 50% of the capacitor’s initial energy to go into heating in the resistor.