CHARGING AND DISCHARGING

Batteries can be charged and discharged. When a battery is charged, it is filled with energy. When a battery is discharged, it releases energy to power a device.

DIFFERENT TYPES OF CURRENT

Current

Current is the flow of electrical electrons Symbol for current-I Unit–Ampere (A) just like water flows through the pipe, electricity flows through a wire or circuit.

Voltage

Voltage is the pressure from the power source that pushes the electrons to flow through the circuit for illuminating the light.Unit–Volt(V).Just like the water tank holds water at a certain height, voltage is a measure of how much electrical energy is stored in a battery or power source.High voltage battery will give more brightness to the light.

Direct Current (DC):

A current that always flows in one direction only is called direct current. The current we get from a battery is a direct current.

Alternating Current (AC):

A current that reverses its direction periodically is called alternating current. Most power stations in our country produce alternating current. AC changes direction every 1/100 second and its frequency is 50 Hertz (Hz). One advantage of AC over DC is that it can be transmitted over long distances without much loss of energy.DC is like a river that flows in one direction, while AC is like an ocean wave that moves back and forth.

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