Motor

Which of the following describes a motor?

• It creates mechanical energy.

• It doesn't need an electrical source to function.

• It doesn't follow the Law of Conservation of Energy.

• It converts electrical energy into mechanical energy.

Which of the following cannot affect the performance of a motor?

• battery

• magnetic force

• number of turns in the coil

• size of the voltmeter

The stronger the electromagnet, the motor will spin faster.

• True

• False

Motor or Generator?

• Motor

  Input: mechanical

  Output: electrical

• Generator

  Input: mechanical

  Output: electrical

• Motor

  Input: electrical

  Output: mechanical

• Generator

  Input: electrical

  Output: mechanical

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NGSS.HS-PS2-5

NGSS.HS-PS3-3

In the context of the motor effect, what happens when a current-carrying conductor is placed in a magnetic field?

• It experiences no force.

• It experiences a force perpendicular to the direction of the magnetic field.

• It experiences a force in the direction of the magnetic field.

• It becomes demagnetized.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the principle behind the operation of an electric motor?

• Electromagnetic Induction

• Coulomb's Law

• Faraday's Law of Induction

• Lorentz Force

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following statements about the motor effect is true?

• It describes the process of converting mechanical energy into electrical energy.

• It only occurs in permanent magnets.

• It is the principle behind the operation of generators.

• It is used in devices that convert electrical energy into mechanical energy.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

NGSS.HS-PS3-5

Which of the following is a use of the motor effect?

• Charging batteries

• Operating electric motors

• Heating homes

• Lighting bulbs

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

To reverse the direction of current in a motor, current is conducted

• through the armature.

• in the direction of rotation.

• through the brushes to the commutator.

• through the commutator to the armature.

What is the primary function of an electric motor?

• To convert electrical energy into mechanical energy

• To convert mechanical energy into electrical energy

• To store electrical energy

• To generate alternating current

Tags

NGSS.MS-PS3-5