E10_2-22-10 - E10: Ohms Law Materials: Resistors, ammeter,...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
E10: Ohm’s “Law” Materials: Resistors, ammeter, voltmeter, power supply, wires, switch Initial definitions and givens: Resistance: the resistance of part of a circuit is defined to be the ratio of the voltage across it divided by the current flowing through it. R (ohms) = V (volts)/I (amperes) This is not Ohm’s “law”, it a definition A resistor is said to “obey Ohm’s law” if R doesn’t change when V is changed. Resistor: a circuit part with a well-defined resistance. Initial Instructions and questions: 1. Make a circuit with the power supply, ammeter, switch, and one of the resistors in series. Place the voltmeter in parallel with the resistor to measure the voltage between its two ends. Vary the output of the power supply so that the voltage across the resistor reads 1, 2, 3, 4, and 6 volts. Record the current through the resistor at each setting. Enter the data in GA and plot. (Careful:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

E10_2-22-10 - E10: Ohms Law Materials: Resistors, ammeter,...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online