# Compound alternating current circuits

### Explanation of question 5

A series circuit has an inductance of 1.27mH and a resistance of 3. Its impedance, when connected to a 15V, 500Hz supply, will be approximately

1. 25
2. 5
3. 4
4. 3

The answer is :- 2

First we must calculate inductive reactance XL

= 4approximately

Now we can calculate the impedance Z

= 5

BACK

page (tq0905ex)
Some material Copyright John Bowyer G4KGS.
Click here for important Copyright information
Web Space provided by Hostroute.com Ltd
Contact details