Name ________________
231218840
Ohms Law.
In this lab you are going to measure the resistance by varying the voltage
and measuring the voltage and current. To calculate the resistance you are
going to plot voltage on the y axis and current on the x axis. The slope of
the line is the resistance of the resistor (V = I R). You are going to measure
the resistance of three resister this way.
a)
b)
c)
A known 10 resistor
A light bulb
An unknown resister.
Your grade on this lab is based on how well you present the data (units on
graph paper and reasoning on what your doing), can state whether ohms law
applies or not, and how close you can determine the unknown resistor. (with
in 10% is an A, 15% B…)
In stepping up the Voltage do not use more that 20 V.
Questions
1.
What was the resistance of your light bulb?
2.
What devices were Ohmic and why?
3.
What is the Letter of your Unknown resistor __________
What value of resistance did you calculate. ___________