Difference between revisions of "Generator Effect"

Revision as of 11:29, 5 March 2019

Key Stage 4

Meaning

The generator effect is the current induced in a wire when it is in the region of a changing magnetic field.

About The Generator Effect

When a wire is moved through a magnetic field at right angles to the field lines it causes a potential difference across the wire. If that wire is part of a circuit this will induce a current.

The generator effect takes place whenever a wire is in a changing magnetic field. This change can be due to the relative motion of the wire and magnet or by the magnetic field changing over time.

The generator effect is used in power stations to generate electricity.

The direction of the current induced is shown by the 'right hand generator rule'.


\(\overrightarrow{B}\): First finger field. \(\overrightarrow{v}\): The motion of the wire. \(\overrightarrow{I}\): Second finger current.	This diagram shows that as the wire is moved through the magnetic field a current can be generated.

@@ Line 7: / Line 7: @@
 : The '''generator effect''' takes place whenever a [[wire]] is in a changing [[Magnetic Field|magnetic field]]. This change can be due to the relative motion of the [[wire]] and [[magnet]] or by the [[Magnetic Field|magnetic field]] changing over time.
 : The '''generator effect''' is used in [[Power Station|power stations]] to generate [[electricity]].
+: The direction of the [[Electrical Current|current]] induced is shown by the 'right hand generator rule'.
 {| class="wikitable"
 |-
 |[[File:GeneratorEffect.png|center|300px]]
+|[[File:RightHandGeneratorRule.png|center|300px]]
 |-
+| style="height:20px; width:200px; text-align:center;" |
+<math>\overrightarrow{B}</math>: First finger [[Magnetic Field|field]].
+<math>\overrightarrow{v}</math>: The motion of the [[wire]].
+<math>\overrightarrow{I}</math>:  Second finger [[Electrical Current|current]].
 | style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows that as the [[wire]] is moved through the [[Magnetic Field|magnetic field]] a [[Electrical current|current]] can be '''generated'''.
 |}