S searley Senior Member Joined Sep 12, 2008 Messages 320 Reaction score 0 Sep 14, 2008 #1 A circuit has a resistance of 20ohms and an inductive reactance of 15ohms when connected to an a.c. supply.the impedance of the circuit is ?. how can i work this out.help needed.cheers.
A circuit has a resistance of 20ohms and an inductive reactance of 15ohms when connected to an a.c. supply.the impedance of the circuit is ?. how can i work this out.help needed.cheers.
E electrical55 Junior Member Joined May 24, 2008 Messages 1 Reaction score 0 Sep 14, 2008 #2 z=sqrt(r sqrd+y sqrd) ie in this case z=sqrt (400+225)=sqrt(625)=25 ohms
S searley Senior Member Joined Sep 12, 2008 Messages 320 Reaction score 0 Sep 14, 2008 #3 cheers top man.
