Name: _____________________
Wire Resistance and Ohm’s Law PhET MiniLab
Introduction: When an electrical potential exists in a circuit, a current may flow. Current is the flow of electrons in a circuit. Resistance in the circuit slows the flow of the electrons, reducing the current in the circuit. We will use the mathematical form of Ohm’s Law frequently when we investigate electric current and circuits later in this unit.

• Open the PhET Simulation Electricity, Magnets, and Circuits ( Resistance in a Wire[pic] As wire length (cm) increases, the resistance (Ω) _________________ As wire area (cm2) increases, the resistance (Ω) __________________ As wire density (Ωcm) increases, the resistance (Ω) _______________ Procedure: Ohm’s Law: Electricity, Magnets, and Circuits ( Ohm’s Law [pic] mA is milliamps, and _________ milliamps equals one Ampere.

• Move the potential (volts) and resistance (ohms) sliders and observe the current (amps) As voltage increases, current __________________.
As resistance increases, current ________________.
Fill out the tables below and check your work in the simulation. ( ½ pt each ) • Remember, the simulation shows milliamps.
• You should show Amperes
V =I * R
|8.0 V |A |800 Ω | |2.0 V |.044 A |Ω | |V |.0058 A |430 Ω | |V |.069 A |100 Ω | |6.4 V |A |300 Ω |

Conclusion Questions: ( ½ pt each)
1. Incandescent light bulbs have a very thin filament that glows when hot. Thin filaments have very high / low resistance. 2. The 12V battery in your car operates a 25 amp car stereo. What is the resistance of this stereo system? ___________ 3. A “2D” Maglite flashlight runs on 3.0V. What is the current through the bulb if resistance...

...Experiment No: EM-1 Title: Ohm’s Law, Meters, Resistivity
I Purpose:
The basic of simple electrical circuits and measurements is learned. Also, investigating the dependence of the resistance of a wire on its length, cross-sectional area, and the material of which it is made. By examining electrical resistance (R) through a metal conductor, the voltage (V) and current (I) through the conductor, the following principles will be demonstrated:
1.) Ohm’s Law...

...Ohm’s Law
Go to http://phet.colorado.edu/simulations/sims.php?sim=Ohms_Law
and click on Run Now.
Wire Resistance and Ohm’s Law
Procedure Part I Wire Resistance:
open the PhET Simulation Electricity, Magnets, and Circuits ( Resistance in a Wire.
As wire length (cm) increases, the resistance (Ω) _increases________
As wire area (cm2) increases, the resistance (Ω) _decreases_________
As wire resistivity (Ωcm) increases, the resistance (Ω) _increases____...

...Investigating Ohm’s Law
Introduction/Background
Current is the rate of the flow of energy; an electric current is the flow of electrical charge around the circuit. It is measured in ohms (Ω). The quantity of flow in an electric circuit is dependent on the ohmic value of the resistance. The amount of resistance in a given circuit is stationary and is not dependent on the current. “The higher the voltage of a battery, the more potential energy per coulomb of...

...Research Paper – Georg Ohm
Georg Ohm was a German physicist born in March of 1789.
Georg came from a Protestant family. His father who was a locksmith Johann Wolfgang Ohm, and his mother who is Maria Elizabeth Beck, was the daughter of a tailor. Even though his parents had not been really educated at the time, Ohm's father was a very wise man who had educated himself and his son Georg.
In my research I found out that he wrote an elementary...

...OhmsLawOhmsLaw
Thomas More College
Thomas More College
How it applies to different materials
Lucas Cosmidis 11 physics
How it applies to different materials
Lucas Cosmidis 11 physics
Aim/Purpose
The aim is to investigate whether 12v light bulb and a ceramic resistor are either non- ohmic or ohmic. From results calculations can be made to find the resistance produced and then graphed indicating whether the light...

...New York City College of Technology
Ohm’s law & resistors in parallel & in series
Lab 4
Class: PHY 1434-E475
Due date: March, 13 20144
Group Names: Hisham Sageer
Objectives:
Our object is to confirm Ohm’s law by analyzing the dependence of the electrical current as a function of voltage and as a function of resistance. Also, we studied the current flow and voltage in series and parallel. Finally, the lab determined the...

...Conclusion
Ohm's Law states that V=RI where V is the difference of potential at the poles of the element (measured in volts), R is the resistance of the element being tested (a resistor in this case, measured in ohms), and I is the current passing through the circuit (measured in milliamps). When the Y-intercept on the attached voltage drop vs. current in the conductor graph is examined, it is observed that the the ranges of R values overlap, also the expected...

...2006
"Ohm's Law is the relationship among electric current, resistance, and voltage. The principle is named after the German scientist George Simon Ohm." Webster's Online Dictionary. I will be discussing the uses of Ohm's Law and why it is so important in everyday electrical problems whether it be simple or not. It is everywhere and used by many whether they notice it or not.
Ohmslaw states that current in amperes...