Inductors

If you reverse the direction of movement of a magnet influencing a coil, what happens to the current?

• reverses

• increases

• stays same

• decreases

Tags

NGSS.HS-PS2-5

Electromagnetic induction can occur in any conductor, regardless of whether it's a straight piece of wire or coil.

• True

• False

Tags

NGSS.HS-PS2-5

The current induced in a second piece of wire develops it's own magnetic field which in turn will induce a current in the original wire of reverse polarity. What is this called?

• Opposite/opposing reactance

• Counter/Back EMF

• Mirror Effect

• Magic

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Mutual inductance is NOT dependant on which of the following:

• number of turns

• physical size of each coil

• Position of coils

• thickness of wire

What is the greatest inductance core material out of the following?

• Air

• Copper

• Iron

If a transformer secondary draws more current, the primary Back EMF will...

• reduce

• increase

• no effect

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

If two coils are positioned such that all of the flux from the primary passes onto the secondary, this is called

• unity

• saturation

• losses

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The symbol and units of inductors are

• L (Henrys)

• C (Conductance)

• F (Flux)

• C (Farads)

Inductors...

• oppose change

• like change

Inductors are NOT also known as...

• chokes

• reactors

• coils

• shunts