# Homework Help: A few quick circuit questions, amps, norton's equivalent, etc

1. Apr 19, 2010

### sitting_duck

1. The problem statement, all variables and given/known data

Problems below in attached files.

2. Relevant equations

http://en.wikipedia.org/wiki/Norton's_theorem
http://en.wikipedia.org/wiki/Maximum_power_theorem

3. The attempt at a solution

Q1) current to voltage amp question

Attempt:
if i1 is 2mA. Then 5(i1)=.01, therefore using voltage division Vo is equal to .005 volts? I thought this was an amplifier?

2) Max Power Question

How do i find the Thevin equivalent resistance? Isn't it the resistance in the circuit "looking back" from the terminals and shorting the voltage src? Then is 177.77ohm correct?

Q3) Attempt:
To get a Norton equivalent i must short the terminals and see what current goes through them. How do I calculate this current? Is it 7amps? What affect does the 1ohm resistor have?

#### Attached Files:

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• ###### norton.JPG
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Last edited: Apr 19, 2010