- #1
ineedmunchies
- 45
- 0
Ok I've been given a problem that I've got stuck on, I was wondering if anyone here could help.
Q:
v(t) = 100 sin(200t+20^)
i(t) = 10 sin(200t-10^)
Express voltage and current as phasors, and calculate the average power being supplied. (I've used ^ to denote degrees)
The phasors part is pretty simple I think, the voltage is a line 100 in magnitude and 20 degrees positive of the x axis, and the current is of 10 magnitude and 10 degrees negative of the x axis.
Its the power bit that I don't get, should I break these down into complex form and multiply them that way?
Q:
v(t) = 100 sin(200t+20^)
i(t) = 10 sin(200t-10^)
Express voltage and current as phasors, and calculate the average power being supplied. (I've used ^ to denote degrees)
The phasors part is pretty simple I think, the voltage is a line 100 in magnitude and 20 degrees positive of the x axis, and the current is of 10 magnitude and 10 degrees negative of the x axis.
Its the power bit that I don't get, should I break these down into complex form and multiply them that way?