Ohm's Law: Difference between revisions
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==Ohm's Law== | ==Ohm's Law== | ||
[http://en.wikipedia.org/wiki/Ohm's_law Ohm's Law] | [http://en.wikipedia.org/wiki/Ohm's_law Ohm's Law] is a formula that relates the basic electrical properties. The common formula for Ohm's Law is:<br/> | ||
::'''V=IR'''<br/> | |||
::'''Voltage = Current x Resistance'''<br/> | |||
==Ohm's Law Diagram== | ==Ohm's Law Diagram== | ||
The following diagram shows the relationship between the various electrical properties.<br/> | The following diagram shows the relationship between the various electrical properties.<br/> | ||
Revision as of 04:09, 28 October 2012
Ohm's Law
Ohm's Law is a formula that relates the basic electrical properties. The common formula for Ohm's Law is:
- V=IR
- Voltage = Current x Resistance
- V=IR
Ohm's Law Diagram
The following diagram shows the relationship between the various electrical properties.
Voltage V
Voltage is measured in volts. (V)
Current I
Current is measures in amps (A). Current is often measured in many electronic circuits is measured in milliamps (ma). A milliamp is one thousandth of an amp (0.01A).
Resistance R
Resistance is measured in ohms (Ω).
Power P
Power is measures in watts (W).
LED Calculator
Use these calculators to calculate the resistor needed to include in a circuit with a LED.
Single LED
LED Calculator for 1 LED.
Array of LEDs
LED Calculator for an array of LEDs.