Science 10 Notes (2nd Quarter)

Electric Motor

A device that converts electrical energy into mechanical energy.

Stator

The stationary part of an electric motor that contains the coils of wire.

Rotor

The rotating part of an electric motor that is connected to the shaft.

Coils

Wires wound around the stator that create a magnetic field when an electric current passes through them.

Magnets

Permanent magnets or electromagnets that generate a magnetic field to interact with the stator's magnetic field.

Brushes

Conductive contacts that deliver electric current to the rotor.

Commutator

A split ring that reverses the direction of the current flowing through the rotor's coils.

Electromagnetic Induction

The process of generating an electric current in a conductor by changing the magnetic field around it.

Fleming's Left-Hand Rule

A rule used to determine the direction of force on a current-carrying conductor in a magnetic field.

Electric Generator

A device that converts mechanical energy into electrical energy.

Magnetic Field

A region around a magnet or a current-carrying conductor where magnetic forces can be detected.

Electromagnet

A temporary magnet created by passing an electric current through a coil of wire.

Electromagnetic Induction

The process of generating an electric current in a conductor by changing the magnetic field around it.

Power Output

The amount of electrical power produced by an electric generator.

Frequency

The number of complete cycles of alternating current (AC) per second.

Voltage

The electric potential difference between two points in an electric circuit.

Rectifier

A device that converts alternating current (AC) to direct current (DC).

Turbine

A device that converts the kinetic energy of a fluid (such as water or steam) into mechanical energy.

Electromagnetism

The branch of physics that deals with the interaction between electric currents and magnetic fields.

Electromagnetic Waves

Waves that consist of changing electric and magnetic fields and can travel through space.

Stator

The stationary part of the generator where the induction of electric current takes place.

Electromagnetic Induction

The principle that allows the changing magnetic field of the rotor to induce an electric current in the stator.

Stator Windings

The coils of wire in the stator that generate the induced current.

Power Output

The generated electricity that can be used to power electrical devices or converted to direct current (DC) using a rectifier.

Electric Generator

A device that converts mechanical energy into electrical energy.

Electric Motor

A machine that converts electrical energy to mechanical energy.

Fleming's Left-Hand Rule

The rule followed by electric motors, where a current-carrying conductor experiences a force when it is kept in a magnetic field.

Fleming's Right-Hand Rule

The rule followed by electric generators, based on electromagnetic induction.

Driving Force for Shaft (Motor)

The shaft of an electric motor is driven by a magnetic force developed between the armature and field.

Driving Force for Shaft (Generator)

The shaft of an electric generator is connected to the rotor and driven by a mechanical force.

Current Usage (Motor)

In a motor, current is supplied to the armature winding.

Current Usage (Generator)

In a generator, current is produced in the armature winding.