Exit Check 6.5 - Electromagnetic Induction

6.5.2 Match each way to increase the electricity output of a generator to why it increases the electricity ouptut.

• Longer Wire

• Allows us to wrap more loops of wire

• Faster Spin

• There are more electrons available to move.

• More Loops of Wire

• Allows the electrons to experience the changing magnetism more often

• Stronger Magnet

• Applies a stronger force on the electrons.

• Smaller Frame Size

• There is a greater change in the magnetic field

Answer explanation

This question links to success criteria 6.5.2: I can explain how an electric generator produces electricity.

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6.5.1

What must occur for a magnetic field to induce an electric current?

• The magnetic field must be really big

• The magnetic field must be stable

• The magnetic field must be changing

• The magnetic field must be from a permanent magnet

Answer explanation

This question links to success criteria 6.5.1: I can describe the relationship between a changing magnetic field and electric current.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.2

A device that transforms mechanical energy to electrical energy is a

• generator

• motor

• transformer

• magnet

Answer explanation

This question links to success criteria 6.5.2: I can explain how an electric generator produces electricity.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.2

If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,

• half as much voltage is induced

• the same voltage is induced

• twice as much voltage is induced

• four times as much voltage is induced

Answer explanation

This question links to success criteria 6.5.2: I can explain how an electric generator produces electricity.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.3

This picture shows a generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.

• heat the turbine attached to the generator

• spin the turbine attached to the generator

• reduce friction between the turbine and the generator

• reduce emissions from the generator

Answer explanation

This question links to success criteria 6.5.3: I can identify common energy sources that generate electricity through electromagnetic induction.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.3

This picture shows a turbine generator used to produce electricity at a hydroelectric power plant. Which of the following statements explains how electricity is produced.

• Gravity pulls the water down. The water boils and the steam turns the generator.

• Gravity pulls the water. The moving water collides with the turbine and spins the generator.

• The friction of the moving water boils the water and the rising steam carries electricity.

• The water cools down the hot generator to allow it to work longer.

Answer explanation

This question links to success criteria 6.5.3: I can identify common energy sources that generate electricity through electromagnetic induction.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.3

Match the energy source with the way it uses the turning of a generator to produce electricity through electromagnetic induction.

• Uses gravity to spin a generator

• Oil and Natural Gas

• Use chemical energy to boil water and turn a generator

• Geothermal power

• Does not use electromagnetic induction

• Hydroelectric Power

• Uses wind to spin a generator

• Wind Turbine

• Uses naturally occurring steam to turn a generator

• Solar Panels

Answer explanation

This question links to success criteria 6.5.3: I can identify common energy sources that generate electricity through electromagnetic induction.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

6.5.2

Place the following steps in order to show how a generator works from step 1 on the left to step 5 on the right.

• The changing magnetic field pushes and pulls on the charges in the wire.

• The charges in the wire begin to move.

• Loops of wire are placed inside a permanent magnet.

• The loops of wire are spun.

• The wires experience a changing magnetic field.

Answer explanation

This question links to success criteria 6.5.2: I can explain how an electric generator produces electricity.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.1

The ability of a changing magnetic field to cause a charge to move is called:

• A Faraday Cage

• The Electric Force

• Electromagnetic Induction

• Voodoo

Answer explanation

This question links to success criteria 6.5.1: I can describe the relationship between a changing magnetic field and electric current.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

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6.5.2

How could the experimenter increase the amount of electricity being induced by this experiment?

• Increase the number of coils

• Use less wire

• Use a stronger magnet

• Move the magnet faster

Answer explanation

This question links to success criteria 6.5.2: I can explain how an electric generator produces electricity.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

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