DC Electric Motor terms

In a DC Motor, the coil of the rotor turns into an electromagnet when

• the rotor rotates inside the stator

• electricity (current) flows through the coil

• the rotor is turned by the axle

• the it sits int the field of the stator

The rotor is the name of the part that is

• the rotating coil inside the stator's field

• the stationary magnets around the rotating coil

• the spring loaded parts that contact the commutator

• the split ring that carries electricity to the coil

The stator is

• the sets of coiled wires that create the armature

• the split ring that carries electricity to the rotor

• the spring loaded connections that touch the commutator while it rotates to carry current

• the magnets surrounding the rotor that create the magnetic field that the coil is attracted and repelled by causing motion.

The brushes in an electric motor

• the split rings that rotate in a motor

• the coil that create the electromagnetic field

• Are spring loaded connectors that carry electricity to the rotor by brushing against the commutator as it rotates

• the magnets surrounding the rotor

The commutator is

• The spring-loaded connections that keep contact with the stator

• the split ring that swaps the coils ends between positive and negative as the coil rotates

• the magnets that cause the electromagnet to attract and repulse

• the coil that is also known as the armature

An electromagnet can be made with a coil of wire around a nail if

• the wire is magnetized by a compass

• the wire has a current running through it

• the wire is touching 2 magnet

• the nail is touching a battery on the anode

The greater the number of windings (the number of times it is wrapped around) in an electromagnet's coil

• the stronger the magnet is

• the less the magnet will pick up

• the more current it takes to create the electromagnet

• the slower the compass needle moves to the wire

A compass moves to point to an wire with current running in it because

• the compass is attracted to the metal wire itself

• a compass is used to detect current

• the wire has a magnetic field around it because of the moving electrons

• the compass moves to point to the batteries

We learned in the video that adding more than one coiled wire inside the motor causes the motor to

• use more magnetism

• run more smoothly, less jerking as the coil gets to the top

• solves the problem of wires getting tangled

• requires less energy to power

Which part may perhaps wear out the fastest in the motor?

• The brushes because they are always sliding against the commutator

• the coils because the electric current makes them weak

• the stator because it is always moving

• the rotor because the stator pulls and pushes it too hard