00:01
I'm going to write down the pertinent information.
00:05
V -sab -0 is 100 volts.
00:11
F equals 500 hertz, which would mean that omega equals 2 times 500, which is 1 ,000 pi radiance per second.
00:28
R is 500.
00:32
Holmes, l is 0 .20 henry.
00:40
In part a, we have a capacitor also, which is 2 times 10 to the negative 6th power, ferrets.
00:55
So i would start by calculating the impedance.
00:59
It's going to be the square root of r squared plus xl, which is just going to be omega l, minus xc, which is one over omega c, squared.
01:14
So let me put that into a calculator, sqrt of r squared, r is 500, minus, no, plus in parentheses so it's going to be 1 ,000 pi times .2 minus 1 over 1 ,000 pi times 0 .2, minus 1 over 1 ,000 high times c, which is 2 times 10 to the negative 6th power.
01:59
That's going to give me to two significant digits, 500 oms.
02:10
I forgot to square it.
02:13
Sorry about that.
02:14
It's not 500 oms.
02:16
It is 690 oms.
02:30
Okay, so we're trying to find the average power dissipated by the resistor.
02:37
All right.
02:39
I believe we're going to have to figure out the current.
02:41
Which is going to be v -0 over z, 100 over 690.
02:54
Let me put that into a calculator.
03:03
100 divided by 190 is 0 .15 amps.
03:21
Now, the power dissipated over the resistor power average is going to be one -half i -0 v -0.
03:49
So i think i'm going to deviate a little bit from the book because this voltage is just over the resistor, not the entire voltage...