Answer:
One of the ways by which electricity is generated is through hydroelectric generation.
Explanation:
There are various ways by which electricity can be generated, such as hydroelectric (water), geothermal, solar (with the use of photovaltaics).
Using the hydro-power as focus;
Electricity is generated in a power stations or power plants using coal, oil or natural gas as fuel which is used to generate heat.
The heat generated is in turn used to generate steam which is used to power a turbine by spinning it, the spinning turbine activates an electromechanical generator to produce electricity.
(However, in some power stations, with the use of a large water reservoir or dam, water is released from the reservoir and the water flows through the turbine, spinning it.)
The Electric generators transform kinetic energy into electricity and the principle at work is Faraday's law of electromagnetic induction.
The power generated is transmitted at high voltage and low current to substations, where the voltage is lowered so it can be sent on smaller power lines. It is then distributed to transformers in every neighborhood and the transformers also reduce the voltage so that the power that gets into our homes is safe for consumption (use).
Usefulness of Electricity;
The usefulness of electricity cuts across our everyday life, starting from lighting, cooking, laundry, source of power for gadgets and electrical appliances such as computers and TV set, water heater, refrigerator, public transportation systems.
Without electricity, there would be no access to any of the above mentioned necessities of life.
