Energy efficiency:
The efficiency of an electrical appliance refers to how much electrical energy supplied to it can be used beneficially
Not all of the electrical energy supplied is used by electrical equipment, some of the electrical energy is used to overcome resistance and is lost as thermal energy
Efficient electrical appliances will experience minimal heat loss when in use
Examples of LED bulbs are more efficient than fluorescent lamps and filament bulbs
The Energy Commission (ST) was established to regulate the energy sector of the electricity and piped gas supply industry in Peninsular Malaysia and Sabah Sarawak
Ensure the energy industry is developed, efficient, and supply at affordable prices to consumers
Electricity consumption:
The quantity of electrical energy depends on the power rating of the electrical equipment and the length of time the electrical equipment is used
Formula: Electrical power (W) = Electrical energy consumed (J) / Duration of Consumption (s)
Therefore, the electrical energy used
Formula: (J) = Power (W) x Time (s)
Electrical power depends on the value of voltage and current used by electrical equipment
Formula: Electric power (W) = Voltage (V) x Electric current (A)
Assess yourself by staged practices
