What direction does a magnetic field go in?

What is the name of a coil of wire rotating in a magnetic field?

What happens to a current-carrying coil of wire in a magnetic field?

Why does the coil of wire rotate in a magnetic field?

What is the name of the force which causes a motor to turn?

Why is force in an opposite direction on each side of a coil in a motor?

What rule can be used to work out which way a coil will turn?

How many type of currents are there?

What type of current do electric motors use?

Why do electric motors use direct current?

Why would alternating current not work in an electric motor?

How do you swap the polarity of a d.c. supply?

How can you change the direction of a motor?

How else can you change the direction of a motor?

What device is used to keep the motor rotating in the same direction?

Why do split ring commutators keep the motor turning in the same direction?

What does a split ring commutator do?

If the current-carrying coil of wire is attached to a split ring, what does the motor force cause?

The magnetic field is acting from right to left and current is acting towards you. How does the coil spin?

The magnetic field is acting from left to right and current is acting towards you. How does the coil spin?

What devices use the motor effect?

What do vibrations of objects cause?

What do loudspeakers and headphones use the motor effect to do?

What effect do loudspeakers use?

What is produced in the loudspeaker?

What type of current is used in loudspeakers?

What happens every time the A.C. supply reverses in a loudspeaker?

What is the coil wrapped around in a loudspeaker?

What is generated in the microphone?

What effect do microphones use?

What do sound waves hit in a microphone?

When the diaphragm of a microphone moves, what happens to the coil?

What does the movement of a microphone coil depend on?

When the coil in a microphone rotates, what happens?