NGSS.HS-PS2-5

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

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What happens when an electric current flows through a wire?

• The wire begins to spin.

• Nothing happens.

• A field of gravity is created around the wire.

• A magnetic field is created around the wire.

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Increasing the number of coils in an electromagnet will _________ the power of the magnet.

• decrease

• increase

• not affect

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The interaction of electricity and magnetism is known as?

• Electric current

• Magnetism

• Electromagnetism

• Electric charge

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A material that gives off a magnetic field is known as?

• force field

• electricity

• A current

• A magnet

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What type of core is best for electromagnets?

• Steel

• Iron

• Plastic

• Copper

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Which rule is used to find the direction of magnetic field around a straight conductor

• Left hand rule

• Lenz law

• Newton's right hand rule

• Right hand thumb rule

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Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

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Which of the following statements describes how a generator functions?

• A generator changes the voltage of a circuit by changing the magnetic flux.

• A generator stores electrical energy and discharges it when prompted.

• A generator uses physical work to rotate magnets, thereby inducing an electrical current.

• A generator uses electrical energy to generate a magnetic field that causes physical work.

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NGSS.HS-PS2-5

Using the right hand rule, B represents the direction of the

• current

• magnetic field

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