Pure resistance
, as with DC supplies. Current and voltage are in
phase.
Power dissipated =
where
is the angle between voltage and current.
, therefore power dissipated = VI as with D.C.
supplies
Pure inductance
, the inductive reactance.
. Current lags voltage by 90°.
Power dissipated
, therefore
—power dissipated is zero.
Pure capacitance
, the capacitive reactance.
. Current leads voltage by 90°.
Power dissipated
therefore
— power dissipated is zero.
Remember (Fig. 8.1):
![]() Questions |
| page (t08) |
| Some material Copyright John Bowyer G4KGS. |
| Click here for important Copyright information |
| Web Space provided by Hostroute.com Ltd |
| Contact details |