CAPACITOR WORKSHEET Grade 12/ 13 Nov. 08 Name ………………………………………………… 1. Write down what is meant by the following terms: A. Dielectric B. Farad C. Working voltage 2. Why does a capacitor appear to allow ac to flow, but not dc? 3. What is the charge held by a 470 microfarad capacitor charged to a p.d. of 8.5 V? 4. Why does the circuit BELOW only operate on the forward half- cycle?
Name 1. Write down what is meant by the following terms: A.
Dielectric B. Farad C. Working voltage
2. Why does a capacitor appear to allow ac to flow, but not
dc?3. What is the charge held by a 470 microfarad capacitor charged
to a p.d. of 8.5 V?
4. Why does the circuit BELOW only operate on the forward
half-cycle?
This circuit can be used to measure the value of a capacitor: 5.
A capacitor is connected to a 12-volt power supply by a reed switch
operating at 400 Hz. The ammeter reads 45 mA. What is the
capacitance of the capacitor? 6. What is the energy held by a 50
000 F capacitor charged to 12.0 V?7. A 470 (F capacitor, charged up
to 12.0 V is connected to a 100 k( resistor. (a) What is the time
constant? (b) What is the voltage after 10 s? (c) How long does it
take for the voltage to drop to 2.0 V
