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You searched for "electrical current"
We found 16 results on physics.org and 104 results in our database of sites
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104 are Websites,
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What causes the Earth's magnetic field?
What is electrical resistance?
How do speakers work?
Three alternative ways to charge your iPod
How do solar cells work?
CSI: Geophysics
Why do earthquakes happen?
All about... Particle detection
Can we control lightning?
What are fuel cells?
What is a kilogram?
Cutting the cord - Wireless electricity
All about Graphene
Windbelt - Reinventing wind power
What does the 5 sigma mean?
How does GPS work?
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Showing 21 - 30 of 104
Showing 21 - 30 of 104
Induction motor action
Induction motors use shorted wire loops on a rotating armature and obtain their torque from currents induced in these loops by the changing magnetic field produced in the field coils.
Hits: 2287
Types of Electrical Circuits
Short summary of the properties of series and parallel suitable for UK GCSE level.
Hits: 2311
Biot-Savart Law
The Biot-Savart Law relates magnetic fields to the currents which are their sources. In a similar manner, Coulomb's law relates electric fields to the point charges which are their sources.
Hits: 1334
Doping Of Semiconductors
The addition of a small percentage of foreign atoms in the regular crystal lattice of silicon or germanium produces dramatic changes in their electrical properties.
Hits: 1394
Microphone
Microphones are transducers which detect sound signals and produce an electrical image of the sound
Hits: 1324
How headphones work
How do headphones turn an electrical signal into sound. Find out how and have a look inside an earphone.
Hits: 8746
Electrical resistance
Good revision site aimed at UK A Level standard covering resistance, ohm's law, conductivity etc
Hits: 2686
The Resistor Guide
A complete reference about electrical resistors. This site contains information and facts about resistors, varistors, potentiometers, thermistors and more
Hits: 71
Articles on electricity
A thorough and passionate clarification of the many misconceptions in electrical study which arise at school. Ideal for non-specialist staff who are not too sure what "electricity" actually is.
Hits: 1908
Showing 21 - 30 of 104