PHYSICS 3RD QTR

What metals are attracted to magnets?

• Copper and aluminum

• iron, copper, and nickel

• Copper and cobalt

• iron, cobalt, and nickel

What metals are NOT attracted to magnets?

• iron and copper

• copper and aluminum

• aluminum and cobalt

• iron and nickel

Relationship of Poles: Unlike poles repel each other.

• TRUE

• FALSE

Force of Attraction is strongest at the end of the poles.

• TRUE

• FALSE

Magnetic force passes through materials, including non-metals.

• TRUE

• FALSE

Earth is a giant magnet ( south magnetic pole)

• TRUE

• FALSE

What is the direction of the magnetic field?

• south → north

• north → south

Where is the magnetic field the weakest?

• Poles

• Middle

In Fleming's Right Hand Rule, what does each part of the hand represents?

• Thumb → magnetic field

  Fingers → magnetic force

  Palm → electric current

• Thumb → electric current

  Fingers → magnetic field

  Palm → magnetic force

• Thumb → magnetic force

  Fingers → magnetic field

  Palm → electric current

• Thumb → magnetic field

  Fingers → electric current

  Palm → magnetic force

The factors affecting the strength of electromagnets has an inverse relationship.

• TRUE

• FALSE