# Compound alternating current circuits

### Explanation of question 8

A 0.5F capacitor is connected in series with a 150 resistor across a 12V, 1.6kHz supply. The impedance of the circuit is

1. 7
2. 150
3. 200
4. 250

The answer is :- 4 First calculate the capacitive reactance

= 200approximately

Then calculate the impedance

= 250

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