Vocab
Describes a material that can respond to forces from magnet.
what is Magnetic
Two magnets can either attract or repel
what is true
how many magnetic poles are on earth
what are two magnetic poles
Any material that attracts iron and materials that contain iron
what is a magnetic
there are two different types of motors they are called
what is AC and DC motor
A magnet created by a wire carrying electric current
what is Electromagnet
A magnet can attract or repel a piece of wood
what is false
name Earth’s magnetic poles
what are north and south poles
the area of magnetic force around a magnet
what is magnetic field
produce alternating current, connected to an external circuit via slip rings that move with the rotation
what is AC generators
The device that switches the direction of electrical current in the electromagnet of an electric motor
what is Commutator
An electric motor is used to convert electrical energy into mechanical energy
what is true
The two ends of a magnet (NORTH and SOUTH) where the field lines are closest and the force is strongest
what is magnetic pole
when two parts of a magnetic pull together
what is attraction
The rotating part of the motor, including the electromagnets, is called
what is Armature
A material that retains its magnetic properties, can attract or repel other magnets, and can attract magnetic materials
what is Generator
A generator converts electrical energy into mechanical energy using the law of induction
what is false
a compass is used to find North using ___
Earth's magnetic field
The most common metals attracted to magnets
what is Iron, Nickel and Cobalt
produce direct current, connected to external circuit via commentator that switches the brushes to ensure that despite the revolution of the coil current is supplied in the same direction
what is DC generators
A device that converts kinetic energy into electrical energy using the law of induction
what is Commutator
The influence created by a magnet that exerts forces on other magnets and magnetic materials is called magnetic field
what is true
The method of finding the magnetic poles with your hand is called the
what is right-hand rule
the opposite poles on a magnetic is called
what is north and south pole
A working electric motor needs to have three things. What three things do the motor need
what is a Rotator, Stator, Windings