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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

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