Physics Tuition Singapore Secondary Science Tuition – Electricity Heating Effect

Heating effect

• The conversion of energy in the heating effect of electric current: Electrical energy —> Heat energy
• The resistance of an electrical conductor causes the conversion of electrical energy into heat energy when electric current flows through it.
• The greater the resistance of the electrical conductor, the greater the amount of heat energy
• Different electrical conductors have different degrees of resistance.

For example

Nichrome has a higher resistance than copper.

Therefore, nichrome is used as the heating element in a kettle. Copper

• Certain electrical conductors such as tungsten give out heat and light

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