Magnetism Flashcards
All magnets have A. Stator poles B. North and south poles C. Stator, north, and south poles D. Reversing poles
B. North and south poles
If a North Pole if one magnet was placed near the North Pole of another magnet the poles would
A. Repel each other
B. Attract each other
C. There would be no effect
D. A North Pole does not exist on a magnet
A. Repel each other
What flows between the two ends of a magnet? A. Current B. Voltage C. Electrical charges D. Lines of force
D. Lines of force
What is known as magnetic lines of force? A. Flux B. Permeability C. Capacitance D. Eddy current
A. Flux
A permanent magnet is
A. A coil of wire that has current flowing through it
B. Magnetism created by induction
C. A piece of material that has been magnetized
D. Created by striking two pieces of soft iron material together
C. A piece of material that has been magnetized
An electromagnet is produced by
A. Running current through a coiled wire
B. Running through an iron core
C. Moving an iron core through a coiled wire
D. Moving a coiled wire over an iron core
A. Running current through a coiled wire
How is the magnetic field intensified in an electrical circuit?
A. By increasing the size of the conductor
B. By decreasing the size of the conductor
C. By adding more turns to the conductor
D. By decreasing the turns in the conductor
C. By adding more turns to the conductor
When current flows through the conductor of a solenoid coil, what happens to the iron core?
A. It tries to move away from the magnetic field
B. It tries to center itself in the magnetic field
C. No action occurs in the iron core
D. The magnetic field tries to center itself around the iron core
B. It tries to center itself in the magnetic field
What component uses magnetism for operation A. A pressure control B. An electrical heating element C. A motor D. A thermal overload protector
C. A motor
