Tuesday 9 April 2013

2.13 know that lamps and LEDs can be used to indicate the presence of a current in a circuit

For an LED to light up there must be a current in a circuit. If a LED is in a circuit but not emitting light then there must be no current. If an LED is illuminated then it will have a current flowing through it. By this we know that if the LED in our circuit is shining then there is a current, if it isn't then we don't.
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8 comments:

  1. Mohammed11 June 2014 at 00:39

    Thanks Hannah

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  2. Unknown24 September 2014 at 05:56

    The way forward is Lighting, have a look at our great site http://www.lampslighting.com

    ReplyDelete
  3. Anonymous17 April 2016 at 02:28

    Thank hannah, this website really helps me with my revision for all my end of topic test. ;)

    ReplyDelete
  4. Unknown9 March 2019 at 19:02

    Im from wis. reply if ur ready for the tests.

    ReplyDelete

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