00:01
Hello student, let's start solving part a of the question.
00:03
At no load, current flows only through 25 kω and 75 kω resistor.
00:07
Use the voltage division to calculate v0 when there is no load.
00:10
So v0 equals r2 divided by r1 plus r2 into v equals 75 kω divided by 25 kω plus 75 kω into 200 v equals 150 v.
00:30
Therefore, the no load value of v0 equals 150 v.
00:36
Coming to part b of the question, when rl equal to 150 kω, v0 is the voltage across the parallel resistors r2 and rl.
00:48
So the equivalent resistance of r2 and rl can be given by r equivalent equals r2 rl divided by r2 plus rl equals 75 into 150 divided by 75 plus 150 equals 50 kω.
01:16
Next v0 can be calculated using voltage division as equal to rl divided by rl plus r1 into v.
01:27
Insert the values in this equation.
01:29
So it equals 150 kω divided by 150 kω plus 25 kω into 200 v equals 171 .4 v.
01:42
Therefore, when rl is equal to 150 kω, v0 equals 171 .4 v...