Focus Question

Electromagnets function in electrical devices by:

• using permanent magnets to create a magnetic field

• using electric current to generate a magnetic field

• using static electricity to produce magnetism

• using chemical reactions to create a magnetic field

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NGSS.HS-PS2-5

The definition of 'electromagnetic force' is:

• A fundamental interaction between charged particles.

• A type of mechanical force.

• A force that only acts at a distance.

• A force that is unrelated to electricity.

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Electromagnetism is a branch of physics that deals with the study of:

• light and optics

• heat and thermodynamics

• electricity and magnetism

• sound and acoustics

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A solenoid is a coil of wire that is used to create a magnetic field when an electric current is passed through it.

• A device that converts electrical energy into mechanical energy

• A coil of wire that is used to create a magnetic field when an electric current is passed through it

• A type of battery used in electronic devices

• A semiconductor device used to amplify or switch electronic signals

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Electromagnetic refers to the interaction of what two types of fields?

• Electric and magnetic fields

• Gravitational and nuclear fields

• Thermal and acoustic fields

• Optical and chemical fields

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What is a 'galvanometer'? A galvanometer is an instrument for detecting and measuring small electric currents.

• An instrument for measuring temperature

• An instrument for detecting and measuring small electric currents

• An instrument for measuring pressure

• An instrument for measuring distance

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NGSS.HS-PS2-5

An electric motor is a device that converts electrical energy into what form of energy?

• Thermal energy

• Mechanical energy

• Chemical energy

• Nuclear energy

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Fill in the blank: ________ is the flow of electric charges in a wire or any conductor.

• electric current

• magnetic field

• gravitational force

• nuclear reaction

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What did Hans Christian Oersted notice during his demonstration in 1820 involving electric current?

• The electric current had no effect on the compass needle.

• The electric current affected the direction of the compass needle.

• The compass needle melted.

• The electric current stopped flowing.

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NGSS.HS-PS2-5

What does an electric current produce?

• A magnetic field

• A chemical reaction

• A gravitational force

• A sound wave

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NGSS.HS-PS2-5