Voltage - Revision history

Carlb: /* Voltage across Resistors, Capacitors and Inductors */

2009-04-09T01:19:36Z

Voltage across Resistors, Capacitors and Inductors

← Older revision		Revision as of 18:19, 8 April 2009
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	Where ''V''=voltage, ''I''=current, ''R''=resistance, ''X''=reactance.		Where ''V''=voltage, ''I''=current, ''R''=resistance, ''X''=reactance.


			{{electronics}}

TimVK4YEH at 10:04, 30 August 2008

2008-08-30T10:04:18Z

← Older revision		Revision as of 03:04, 30 August 2008
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	== What is Voltage?==		== What is Voltage?==

	In practical terms, voltage id the difference in electrical potential between two points in a circuit. The unit of measurement is the volt (V), which is a measure of the energy per unit charge.		In practical terms, voltage is the difference in electrical potential between two points in a circuit. The unit of measurement is the volt (V), which is a measure of the energy per unit charge.

	Voltage is one of the properties of an electric field, and can be measured in terms of:		Voltage is one of the properties of an electric field, and can be measured in terms of:

TimVK4YEH at 09:59, 30 August 2008

2008-08-30T09:59:28Z

← Older revision		Revision as of 02:59, 30 August 2008
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	Related wiki pages: [[Electronic ~~Teory~~]], [[Capacitors]]. [[Resistors]]. [[Inductors]], [[transformers]]		Related wiki pages: [[Electronic Theory]], [[Capacitors]]. [[Resistors]]. [[Inductors]], [[transformers]]

	== What is Voltage?==		== What is Voltage?==

TimVK4YEH: aded some info - more needed?

2008-08-30T09:58:41Z

aded some info - more needed?

New page

Related wiki pages: [[Electronic Teory]], [[Capacitors]]. [[Resistors]]. [[Inductors]], [[transformers]]

== What is Voltage?==

In practical terms, voltage id the difference in electrical potential between two points in a circuit. The unit of measurement is the volt (V), which is a measure of the energy per unit charge.

Voltage is one of the properties of an electric field, and can be measured in terms of:

* its relationship to a common point. This is usually with respect to ground (zero volts)

* the relationship between two points. This is usually known as the voltage across a device or the voltage across a circuit.

In physical terms, Voltage is the work required to move an electric charge between two points:

1 Volt is the force required to send one Ampere of current through a resistane of one Ohm.

==Some Formulae==

* <math> V = \sqrt{PR} </math>

* <math> V = I \times R </math>

* <math> P = V \times R </math>

where ''V'' = potential difference (volts), ''I'' = current intensity (amps), ''R'' = resistance (ohms), ''P'' = power (watts).

==Voltage across [[Resistors]], [[Capacitors]] and [[Inductors]]==

Voltage cross a resistor (Resistor R):

*<math> V_R = IR_R \!\ </math>

Voltage across a capacitor (Capacitor C):

*<math> V_C = IX_C \!\ </math>

Voltage across an inductor (Inductor L):

*<math> V_L = IX_L \!\ </math>

Where ''V''=voltage, ''I''=current, ''R''=resistance, ''X''=reactance.