Spec references J249: P8.2h J250: P6.2g. Alternating and direct current. Description and animation.
. Ohm's law V = IR with worked example narrated slides.
Jim Al-Khalili explains how, as we made microchips smaller, the electrical feature of resistance was becoming more probl...
Nikola Tesla invented alternating current (AC) which allowed no electrical power to be lost when passing throug...
An electric current is essentially the flow of electrons (which are electrically charged) from one atom to anot...
Invented by Italian chemist Alessandro Volta in 1799, the voltaic pile was the first electrical battery that could con...
Benjamin Franklin discovered that electricity could be like money in a bank, it could be in credit (p...
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