Answer the following questions related to the commercial unit of electrical energy.

PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity

Problem

Answer the following questions related to the commercial unit of electrical energy. (i) Define electrical energy and state its SI unit. (ii) Write the numerical relation between

1\,\text{kW}\!\cdot\!\text{h}

and joule. (iii) An electric heater is rated

1.0\,\text{kW}

. If it is used for

2.5\,\text{h}

, calculate the energy supplied in joules.

Related theory

Electrical Energy
Electric Power
Electrical energy and power
Current Electricity
Electricity
Electrical power and energy

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