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Selected topic Motors & the Motor Effect Science · Forces & Motion · view full details

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Science·Forces & Motion·conceptual

Motors & the Motor Effect

Explain the motor effect as the force on a current-carrying conductor in a magnetic field, and describe how this principle is used in electric motors and loudspeakers

Suggested ages 13–14

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Evidence of understanding

Explains that a current-carrying conductor in a magnetic field experiences a force (the motor effect)
Predicts how reversing the current or reversing the magnetic field affects the direction of the force
Describes how the motor effect is applied in an electric motor and in a loudspeaker

Assessment prompt

If Motors & the Motor Effect looked inside an electric motor or the back of a loudspeaker, could they explain why the coil of wire moves — and what would happen to the movement if you reversed the direction of the current?

Standards alignment

MS-PS2-5US · ngss-ms

MS-PS2-5

Next Generation Science Standards (NGSS) Middle School