Calculate the Cost of Electricity Consumption (3)

Science

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Formula of electric current

Definition of voltage

Is defined as the electrical energy, E, used to move a unit of electric charge, Q, through a conductor

S.I unit for voltage

Volt (V)

Formula of voltage

Formula to calculate the flow of current through electrical appliances

The common unit used for electrical energy

Is kilowatt-hour (kWh)

1 kilowatt-hour (1)

Is the amount of electrical energy used at the rate of 1 kilowatt or 1 000 watts in 1 hour

1 kilowatt-hour (2)

Referred to as 1 unit

Formula to calculate electrical energy used (kWh)

Electrical energy used (kWh) = Power (kW) × Time (h)

Characteristics of green building (1)

Efficient ventilation system to reduce the use of air conditioning and fan

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