Voltage-current equation of Thevenin circuit

[ali297]

Homework Statement

I need help with part (b).

Homework Equations

The Attempt at a Solution

The Thevenin resistance is 15 ohms, voltage open circuit 30 V and the short current circuit is 2 A. You can take these for granted, I've confirmed with a friend.

I really don't know what they mean by "voltage-current equation", are they talking about Ohms law?

 

[gneill]

I really don't know what they mean by "voltage-current equation", are they talking about Ohms law?

Write an expression that relates the output voltage to the output current (or current vs voltage).

Consider sticking a voltage source on the output and "measuring" the resulting current.