1. Hi i'm going to a physics Summer camp but they asked me to carry out my own experiment. This is because my dad's a physics teacher and he has alot of equipment readily available to him. I have to find the internal resistance of a dc power supply with the following equipment given: Power Supply Ammeter Voltmeter Variable Resistor 2. V=IR 3. I don't know if I need more equations but would love to hear some feedback on how to do this! Thanks.