Aqa Electromagnetism

What must the electrons do in an object to give it a magnetic field?

• Flow in the same direction

• Flow in the opposite direction

• Collide into one another

• Equal the number of protons and neutrons

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NGSS.MS-PS2-3

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

• wire, iron, electric

• electric, wire, iron

• iron, electric, wire

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

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NGSS.MS-PS2-3

The area of magnetic force around a magnet is known as its ____________.

• magnetism

• magnetic current

• magnetic field

• electric current

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NGSS.MS-PS2-5

The lines on this image are called...

• magnetic field lines

• iron fillings

• graphite lines

• none of these

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NGSS.MS-PS2-3

You can make an electromagnet stronger by...

• increasing the current through the wire

• make the iron core bigger

• increase the number of loops around the core

• All of these

How can a wire become magnetic?

• point it north

• add a resistor

• heat it up

• run a current through it

Tags

NGSS.MS-PS2-3

Magnetic poles and electric charges are similar in that...

• like poles repel and opposites attract

• magnetic force is equal to electric force

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NGSS.MS-PS2-3

If the end of an unknown magnet sticks to a magnet pole labeled "North" the unknown end must be...

• North

• South

• East 

• West

Electricity can be used to create a magnet

• True

• False

Tags

NGSS.MS-PS2-3