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Example: The battery in your remote control

provides power to make it work.

Wires: These are like the roads that electricity travels on. Wires connect all

the parts of the circuit.

Example: The wires inside a lamp carry electricity from
the plug to the bulb.

Load: This is what the electricity powers, like a

light bulb, fan, or motor.

Example: The bulb in a flashlight lights up when
the circuit is complete.

Battery and It’s Polarity

A battery is a power source that gives energy to different
devices, like toys, flashlights, and remote controls.

It stores electricity and helps things work by sending
electrical energy through a circuit.

What is Polarity?

Polarity means that a battery has two ends, or sides:

1. Positive (+): The side marked with a plus sign (+)

is called the positive end.

2. Negative (-): The side marked with a minus sign
(-) is called the negative end.

For a battery to work, it must be connected correctly. The positive end of the
battery must connect to the positive part of the circuit, and the negative end

must connect to the negative part.
Example: When you put a battery in a toy, if you

match the plus (+) and minus (-) signs correctly,
the toy works. But if you put the battery in the

wrong way, the toy won’t work because the
electricity can’t flow properly.

Introduction to Electronics and Circuits 35