Question:
A certain amplifier has a no-load output of 5 V. A 1KΩ load resistor is connected to the amplifier and the output is reduced to 3V. Whats the output impendance of the amplifier?
My attempt:
Hmmm. This is probably simple. But no formula comes to mind. I can only blame my poor textbook because I know I have some brains.
I know that:
I=E/R
So: I = 5/1000 = 0.005 A
I know that:
R=E/I
So: 3/0.005 = 600 Ω
But thats not the answer
What the hell am I missing here?
A certain amplifier has a no-load output of 5 V. A 1KΩ load resistor is connected to the amplifier and the output is reduced to 3V. Whats the output impendance of the amplifier?
My attempt:
Hmmm. This is probably simple. But no formula comes to mind. I can only blame my poor textbook because I know I have some brains.
I know that:
I=E/R
So: I = 5/1000 = 0.005 A
I know that:
R=E/I
So: 3/0.005 = 600 Ω
But thats not the answer
What the hell am I missing here?