Generators and Motors

How does electromagnetic induction work?

• Electromagnetic induction is the process of generating heat in a conductor by changing the magnetic field around it.

• Electromagnetic induction is the process of generating an electric current in a conductor by changing the magnetic field around it.

• Electromagnetic induction is the process of generating a magnetic field in a conductor by changing the electric current around it.

• Electromagnetic induction is the process of generating sound waves in a conductor by changing the magnetic field around it.

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How are motors and generators used in everyday life?

• Motors are used to power devices and machines, while generators produce electricity.

• Motors and generators are only used in industrial settings, not in everyday life.

• Motors are used to generate electricity, while generators power devices and machines.

• Motors and generators are not used in everyday life.

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When a wire with a current is placed in a magnetic field, electrical energy can be transformed into..

• Chemical energy

• Mechanical Energy

• Radiant Energy

• Thermal Energy

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What is produced by moving a permanent magnet through a coil of copper wire?

• electricity

• electromagnet

• light

• sound

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Which best describes how a motor works?

• When a fan blows on a wire, it causes it to spin, creating a force.

• When a fan blows on a wire, it causes it to spin, creating an electrical current.

• When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

• When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

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Which statement best explains the flow of energy through a motor?

• battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy

• battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy

• magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current

• magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current

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In an electric motor, the energy transformation begins as  ----

• electrical and becomes chemical

• mechanical and becomes electrical

• electrical and becomes mechanical

• mechanical and becomes chemical

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Which of these pairs of devices operate in reverse of each other?

• generator and motor

• generator and electromagnet

• motor and electromagnet

• electromagnet and resistor

What is the primary function of a generator?

• To convert electrical energy into mechanical energy

• To convert mechanical energy into electrical energy

• To store electrical energy

• To amplify electrical signals

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Which component is essential for the operation of both motors and generators?

• Capacitor

• Resistor

• Magnetic field

• Diode

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