Magnetic Force on Current Carrying Wire

Who was the first to observe the magnetic effect of electric current?

• Faraday

• Oersted

• Volta

• Ampere

Tags

NGSS.HS-PS2-5

How can you test to see if there is a current running through a wire?

• listen carefully to see if you hear a buzzing sound

• place several compasses around the wire

• place several batteries around the wire

Tags

NGSS.HS-PS2-5

The electromagnetic forces from a current carrying wire are strong enough to move the compass needle. The forces can be made stronger by

• making the wire shorter

• making the wire longer

• making the wire into loops

Tags

NGSS.HS-PS2-5

A compass needle points north because of Earth's magnetic field unless

• it is close to a wire with a current

• it is close to any wire

• it is close to a battery

Tags

NGSS.HS-PS2-5

When running a current through a wire, what do the blue lines represent?

• The wire spinning.

• A magnetic field.

• Electrons leaving.

• Electricity.

Tags

NGSS.HS-PS2-5

If the current in this picture was reversed, which way would the wire move?

• up

• down

• left

• right

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

According to the diagram, which way will the wire move in the magnetic field?

• up

• down

• left

• right

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

To change the strength of a magnetic field around a current-carrying straight wire, change the amount of _____ running through the wire.  262

Tags

NGSS.HS-PS2-5

The compass needles are turned by magnetic forces caused by electric current. The magnetic forces caused by an electric current are one kind of

• gravitational force

• gravitational field

• electromagnetic force

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Electronic devices create magnetic fields because they

• are magnets

• are compasses

• have moving particles with electric charge

Tags

NGSS.HS-PS2-5