Electric Current - Electric Current And Energy
electrical conductor resistance heat
Heat results when current flows through an ordinary electrical conductor. Common materials exhibit an electrical property called resistance. Electrical resistance is analogous to friction in a mechanical system. Resistance results from imperfections in the conductor. When the moving electrons collide with these imperfections, they transfer kinetic energy, resulting in heat. The quantity of heat energy produced increases as the square of the current passing through the conductor.
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