Element 3-2 Magnetism Flashcards
1
Q
What determines the strength of the magnetic field around a conductor
A
the amount of current flowing
2
Q
What will produce a magnetic field?
A
a current flowing through a conductor
3
Q
When induced currents produce expanding magnetic fields around conductors in a direction that opposes the original magnetic field is known as
A
Lenz’s Law
4
Q
The opposition to the creation of magnetic lines of force in a magnetic circuit is known as
A
reluctance
5
Q
What is meant by the term EMF?
A
a voltage that opposes the applied EMF
6
Q
Permeability(measurement) is defined as
A
the ratio of magnetic flux density in a substance to the magnetizing force that produces it
