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Electromagnets OALH

Last updated almost 5 years ago
33 questions
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1

1.How does a compass work for navigation?

1

2. What direction do the magnetic field lines go when drawn around a magnet?

1

3. Define a permanent magnet.

1

4. Describe a method for plotting the magnetic field lines around a magnet.

1

5. Convert the following number to standard form - 1240000.

1

Describe the factors that could effect reaction time (3).

Key Knowledge - LCWC
1

What happens when a current flows in a conducting wire?

1

What does theright hand grip rule shows us for a wire?

1

What is a solenoid?

1

What does theright hand grip rule shows us for a solenoid?

1

What is an electromagnet?

1

How can we increase the strength of an electromagnet?

1

What happens when a current flows in a conducting wire?

1

What does theright hand grip rule shows us for a wire?

1

What is a solenoid?

1

What does theright hand grip rule shows us for a solenoid?

1

What is an electromagnet?

1

How can we increase the strength of an electromagnet?

Recall Quiz
1

Choose the correct diagram:

1

Choose the correct diagram:

1

Choose the electromagnet that will pick up the most paper clips:

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I can increase the strength of an electromagnet by...

Independent Practise
1

1. Suggest three factors that affect the strength of the magnetic field around an electromagnet.

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2. Describe how increasing the number of coils on a solenoid affects the strength of the magnetic field around the wire.

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3. Explain how to work out the direction of a magnetic field around a straight wire.

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4. Explain how to work out the direction of a magnetic field around a solenoid.

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5. Draw an example of the magnetic field around a solenoid. Label clearly the flow of current and the direction of the magnetic field using arrows.

Plenary
1

1. What happens when a current flows in a conducting wire?

1

2. What does theright hand grip rule shows us for a wire?

1

3. What is a solenoid?

1

4. What does theright hand grip rule shows us for a solenoid?

1

5. . What is an electromagnet?

1

6. How can we increase the strength of an electromagnet?