how to make an electric motor at home easily
INTRODUCTION:
Electric current is nothing but net amount of charge flowing
through unit area of cross section of a conductor per unit time. As we know that electrons possess negative
charge that is electrons are negatively charged particles. When these electrons are flowing through any
electrical conductor, there is a development of magnetic field surrounding to
the conductor. When this conductor is placed in any external magnetic field,
then there is action of magnetic force on the conductor. This force causes the moment of the conductor
in the magnetic field. This principle is
applied in an electric motor. In this
motor, instead of a single long conductor, we use to take a rectangular coil,
which is usually placed in a strong magnetic field. This coil is rotated in the magnetic field,
due to the flow of current. Which is
usually rotated in magnetic field, this rotation of coil is utilized as
mechanical energy. This mechanical
energy is utilized for various purposes at home.
This
concept reveals electromagnetic induction.
As discussed, when electric current passes through the coil, magnetic
field is developed, and the coil also acts like a magnet. The two faces of the
coil acts like magnetic poles, on one side it acts like a north pole and
another side it acts like a south pole.
Hence, the current passing coil acts like a magnet.
Materials required:
1) A
Wooden platform
2) 9v battery
3) Metallic strips
4) Non insulated copper wire
5) Key to on/off the circuit
Procedure:
The circuit diagram consists of the construction part of
electric motor. Take a 9v battery,
connect to the metallic strips which is connected to a circular coil and the
two ends of the circular coil are connected to the metallic strips. Above the battery, a strong magnet should be
placed.
Working: When the circuit is closed, the current starts
flowing through the metallic strips. The
coil acts like a strong magnet consisting two poles, and this is repelled by
the external magnet, with which the net force acts on the coil, by which the
coil gets rotated, the continuous rotation of coil is utilized in our daily
life as electric water motor, water pump, mixture, etc.
USES:
Electric motor is a device which converts electrical energy
into mechanical energy, this principle is applied in our daily life at
different situations.
