AC & DC Generator

In the Flemming's left hand rule, the thumb is representing the ....

• Direction of magnetic field

• Direction of electric current

• Motion of wire

• Turning effect of coil

Which part (s) of the DC motor connect the power supply to the split-ring and coil?

• Carbon brushes

• Magnets

• Commutator

• Slip rings

The motion in DC motor can be increased by the following factors... (you may choose more than one)

• Using a stronger magnet

• Increasing the potential difference

• Increasing the current

• Increasing the number of turns on the coil

Which part of an electric motor changes the current direction every half-turn?

• Split ring

• Slip rings

• Brushes

• Battery

Use Flemming's left-hand rule to work out which way coil AB will turn.

• Downward

• Upward

• Into the paper

• Out of the paper

When is the Flemming's left-hand rule used?

• When the magnetic field causes current

• When the motion causes current

• When the current causes motion

• When the current causes magnetic field

What is the name of the effect caused by the wire when it is moved across a magnetic field?

• Induced magnetism

• Electromagnetic induction

• Electromagnetism

• Turning effect of coil

What does the index finger show you in the Flemming's right-hand rule?

• Direction of current

• Motion of wire

• Direction of electric field

• Direction of magnetic field

Which of these is NOT a part of a DC Generator.

• Slip rings
• commutator 
• brushes
• stator

AC generators have 

• 2 slip rings 
• 1 slip ring 
• 3 slip rings 
• 4 slip rings