Download I. Ohm`s Law

Name: _________________________
PhET – Ohm’s Law
Objectives:
 Investigate the effect of potential on current.
 Investigate Ohm’s Law and discover what conditions maximize current flow.
I. Ohm’s Law
 Go to http://phet.colorado.edu/
 Search and open Ohm’s Law simulation
A. Fill in the following table:
Parameter
Unit
Symbol
V
Current


B. Put a single 1.5 V battery in the circuit. Set the resistance to 500 . How
much current flows in the circuit? Show the calculation for this, also.
C. Put three 1.5 V batteries in series. Keep the resistance at 500 .
1. How do you determine the total voltage when batteries are place in
series with one another?
2. The potential difference has gone up by a factor of 3. By what factor
has the current changed?
D. What is the maximum current you can achieve in this circuit? What are the
individual parameters?
E. What conditions minimize current?
F. What is the mathematical relationship between current and voltage?
G. What is the mathematical relationship between current and resistance?
H. Close the program and log out.