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Homework Statement
http://imageshack.us/a/img27/7043/homeworktest2prob5.jpg Find the load current IL (in microamperes) in the circuit.Homework Equations
V = IR
KCL, KVL,
voltage division, current division,Op-Amp Output V = (Gain)(V+ - V-)(Gain) = -Rf / Rin
The Attempt at a Solution
I'm not sure how to figure out the voltages at the nodes before the inputs to the op-amp
I think the gain is just -5k / 10k
I'm pretty sure all I would need to figure out is the input node voltage or whatever the Vin is for each input.But I'm guessing:
V out = (5V - 3V)(-5kΩ/10kΩ) = -1V
IL = -1V/4000Ω
= -250μA
?
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