[Search Doc Brown's science website]

SITEMAP   School-college Physics Notes: Electricity 4.5 Use of LED device

UK GCSE level age ~14-16 ~US grades 9-10 Scroll down, take time to study content or follow links

Electricity section 4: 4.5 An LED light emitting diode - how does electrical device work? and what is it used for?

Doc Brown's Physics exam study revision notes

There are various sections to work through, after 1 they can be read and studied in any order.

INDEX for physics notes on testing circuit devices and how they used


4.5 An LED light emitting diode - how does electrical device work? and what is it used for?

An LED emits light when a current flows through it in the forward direction.

Electrical energy is converted into visible light energy, and very efficiently.

Uses of an LED

You should know that there is an increasing use of LEDs for lighting, as they use a much smaller current than other forms of lighting.

They have a much greater efficiency in converting electrical energy into visible light.

LEDs are used in torches and as an indicator that current is flowing through a circuit. e.g. small red, green or blue lights that might indicate your computer power system is functioning.


Keywords, phrases and learning objectives for an LED device in an electrical circuit

Know how does an LED (light emitting diode) device works in an electrical circuit.

Know examples of what an LED device is used for e.g.  torches, indicator light of power systems.


WHAT NEXT?

TOP of page

INDEX for physics notes on testing circuit devices, how they used - thermistor, LDR, LED and diode

ALL my electricity and magnetism notes

email doc brown - comments - query?

INDEX of all my PHYSICS NOTES

BIG website and using the [SEARCH BOX] below, maybe quicker than navigating the many sub-indexes


Basic Science Quizzes for UK KS3 science students aged ~12-14, ~US grades 6-8

BiologyChemistryPhysics for UK GCSE level students aged ~14-16, ~US grades 9-10

Advanced Level Chemistry for pre-university age ~16-18 ~US grades 11-12, K12 Honors

Find your GCSE/IGCSE science course for more help links to all science revision notes

Use your mobile phone in 'landscape' mode?

SITEMAP Website content Dr Phil Brown 2000+. All copyrights reserved on Doc Brown's physics revision notes, images, quizzes, worksheets etc. Copying of website material is NOT permitted. Exam revision summaries and references to GCSE science course specifications are unofficial.

Using SEARCH some initial results may be ad links you can ignore - look for docbrown

INDEX for physics notes on testing circuit devices and how they used

TOP OF PAGE