NTNUJAVA Virtual Physics LaboratoryEnjoy the fun of physics with simulations! Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
September 20, 2019, 07:29:14 pm

Wisdom consists of the anticipation of consequences. ..."Norman Cousins(1913-1990, American author)"

 Pages: [1]   Go Down
 Author Topic: Ohm's Law  (Read 12973 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
Hero Member

Offline

Posts: 3082

 « Embed this message on: June 05, 2009, 05:21:44 pm » posted from:Taipei,T\'ai-pei,Taiwan

Ohm's Law: The current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, and inversely proportional to the resistance between them.

$I=\frac{V}{R}$

where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms (Ω).

The following applet is a simulation for AC and DC circuit.
You can click the resistor to add it to the circuit or remove it from the circuit.
The same is true for batterys for DC circuit.

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
• Please feel free to post your ideas about how to use the simulation for better teaching and learning.
• Post questions to be asked to help students to think, to explore.
• Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!
 smf_ohmslaw.gif (9.25 KB, 629x451 - viewed 646 times.) Logged
juana17
Newbie

Offline

Posts: 1

 « Embed this message Reply #1 on: June 11, 2009, 02:51:58 pm » posted from:San Juan,Batangas,Philippines

Ohm's Law: The current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, and inversely proportional to the resistance between them.

$I=\frac{V}{R}$

where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms (Ω).

The following applet is a simulation for AC and DC circuit.
You can click the resistor to add it to the circuit or remove it from the circuit.
The same is true for batterys for DC circuit.

Ohm's law applies to electrical circuits it states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, and inversely proportional to the resistance between them.

-*-
 Logged
Hzhane
Newbie

Offline

Posts: 1

 « Embed this message Reply #2 on: July 16, 2009, 10:22:17 am » posted from:San Juan,Batangas,Philippines

I just remember this topic since my high school day. Thanks for the information.

-*-
 Logged
Fu-Kwun Hwang
Hero Member

Offline

Posts: 3082

 « Embed this message Reply #3 on: May 17, 2010, 09:24:09 pm » posted from:Taipei,T\'ai-pei,Taiwan

$R\equiv\frac{V}{I}$ is definition of resistor. This relation alone is not Ohm's law.

We say a resistor obey ohm's law if it's resistance R is a constant. i.e. Voltage divided by current is a constant.
Current is propotional to voltage in a linear way.
 Logged
 Pages: [1]   Go Up
Wisdom consists of the anticipation of consequences. ..."Norman Cousins(1913-1990, American author)"