Electricity and Magnetism

The area surrounding a magnet that applies a force without touching the object.

• magnetism

• magnet

• magnetic theory

• magnetic field

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NGSS.MS-PS2-5

Can you produce current in a wire with a magnet that is sitting still?

• Yes; having a magnet near a wire is enough to excite the electrons

• No; the magnetic field has to be changing to excite the electrons

• No; magnets cannot create electricity

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NGSS.HS-PS2-5

Where is the strongest attraction force of the magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

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NGSS.MS-PS2-5

How is an electromagnet different from a permanent magnet?

• An electromagnet is smaller and less powerful.
• An electromagnet's magnetism can be turned off.
• An electromagnet can be built without using metal.
• An electromagnet does not attract objects containing iron.

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NGSS.HS-PS2-5

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How can the strength of an electromagnet be increased?

• by rubbing it with a stronger magnet
• by increasing the coils of wire around the iron
• by increasing the length of the wire from the battery
• by loosening the coil of wire around the iron

Tags

NGSS.HS-PS2-5

How would flipping the magnet in this experiment change the current?

• The current would not change
• The current would go to the right
• There would be no current
• The current would go CRAZY

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When there is a change in the magnetic field in a closed loop of wire

• (a) a voltage is induced in the wire
• (b) current is made to flow in the loop of wire 
• (c) electromagnetic induction occurs
• (d) all of these

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NGSS.HS-PS2-5

What is the device shown?

• Solenoid

• Electromagnet

• Generator

• Motor

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The Right Hand Rule says that if you hold a wire in your right hand and point your thumb in the direction of the ______ current, the direction that your fingers curl is the direction of the _______.

• Positive, Magnetic Field

• Positive, Current

• Negative, Magnetic Field

• Negative, Current

Tags

NGSS.HS-PS2-5

Does adding loops of wire to a solenoid increase or decrease its strength?

• Increase

• Decrease

• Both

• Neither

Tags

NGSS.HS-PS2-5