Question

Explain heating effect of electric current.

Answer 1

Answer:

Heating effect takes place as when the current flows through the circuit, the device or the resistor thus energy to do some useful work but the rest left is used to produce heat as to maintain the continuous flow of current, the energy has to be used.

• Power : SI unit : Watt

✦ Electric power is defined as the, work done of the charge to move from one place to other per unit time is called electric power.

P = VI

P = I²R or

P = V²/R

✦ Heating effect of electric current is defined as the energy supplied to the circuit in time T.

• H = VIT or H = I²RT

Statement:

Joules law heating States that:

• Heat produced is directly proportional to the sqaure of electric current.

• Heat produced is directly proportional to the resistance.

• Heat produced is directly proportional to the time.

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