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Electronic circuits and components * Course Index * Introduction * About the Author * About this Course * Feedback * Course Navigation * How to use this Course * TINA * Locktronics

Fundamentals * Introduction: Fundamentals * Units and Multiples * Electricity * Electronic Principles * Electrical Circuits ##

Basic Lamp Circuit ## Lamps in Series ## Lamps in Parallel * Alternating Current * Assessment: Fundamentals

Passive Components * Introduction: Passive Components * Resistors * Capacitors * Inductors * Transformers * Batteries, Fuses, Lamps and Switches * Assessment: Passive Components

Semiconductors * Introduction: Semiconductors * Diodes * Transistors * Logic Gates * Assessment: Semiconductors

Passive Circuits * Introduction: Passive Circuits * Series and Parallel Connections * Kirchoff's Laws * Potential and Current Dividers * Passive Time Variant Circuits * Assessment: Passive Circuits

Active Circuits * Introduction: Active Circuits * Power Supply Circuits * Operational Amplifier Circuits * Transistor Amplifier Circuits * 555 Timer Circuits * Assessment: Active Circuits

Parts Gallery * Introduction: Parts Gallery * Passive Component Images * Semiconductor Images * Other Images * Quizzes

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Basic Lamp Circuit

<^< Electrical Circuits | Course Index | Lamps in Series >^>(:nl:)

In the basic battery and lamp circuit, the battery provides an electromotive force (e.m.f.) and this causes a current to flow in the lamp. The battery has an e.m.f. of 6V and the lamp is rated at 6V, 6W. The current flowing in the lamp can be calculated from:

I = P/V = 6W/6V = 1A

Applying Ohm's Law to determine the working resistance of the lamp (i.e. the resistance when illuminated) gives:

R = V/I = 6V/1A = 6&#937; (:nl:)(:table style="clear:both":)

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Page last modified on August 15, 2011, at 02:10 PM