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Questions and Answers
What happens to a compass needle when placed near a current-carrying wire?
What happens to a compass needle when placed near a current-carrying wire?
The compass needle deflects.
What two phenomena are linked by the magnetic effect of electric current?
What two phenomena are linked by the magnetic effect of electric current?
Electricity and magnetism
What did Hans Christian Oersted accidentally discover in 1820?
What did Hans Christian Oersted accidentally discover in 1820?
A compass needle got deflected by a nearby current-carrying wire.
What is the unit of magnetic field strength named after Hans Christian Oersted?
What is the unit of magnetic field strength named after Hans Christian Oersted?
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What type of wire should be used in Activity 12.1 to observe the magnetic effect of electric current?
What type of wire should be used in Activity 12.1 to observe the magnetic effect of electric current?
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In Activity 12.1, how should the copper wire be placed relative to the plane of the paper?
In Activity 12.1, how should the copper wire be placed relative to the plane of the paper?
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What does a current-carrying wire behave like?
What does a current-carrying wire behave like?
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What technologies were created from Oersted's research?
What technologies were created from Oersted's research?
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What effect of electric current was learned about in the previous chapter?
What effect of electric current was learned about in the previous chapter?
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What is the reverse possibility of the magnetic effect of electric current?
What is the reverse possibility of the magnetic effect of electric current?
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Describe the key observation made by Hans Christian Oersted that demonstrated the relationship between electricity and magnetism.
Describe the key observation made by Hans Christian Oersted that demonstrated the relationship between electricity and magnetism.
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Explain how Activity 12.1 demonstrates the magnetic effect of electric current. What specifically indicates this effect?
Explain how Activity 12.1 demonstrates the magnetic effect of electric current. What specifically indicates this effect?
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If the direction of the electric current in Activity 12.1 were reversed, what change would you expect to observe in the deflection of the compass needle?
If the direction of the electric current in Activity 12.1 were reversed, what change would you expect to observe in the deflection of the compass needle?
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What are some technologies that resulted from the understanding of electromagnetism and the work of scientists like Hans Christian Oersted?
What are some technologies that resulted from the understanding of electromagnetism and the work of scientists like Hans Christian Oersted?
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What does the unit 'oersted,' which is named after Hans Christian Oersted, measure?
What does the unit 'oersted,' which is named after Hans Christian Oersted, measure?
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Based on Activity 12.1, infer what happens to the magnetic field's strength as the electric current passing through the wire increases. Explain your reasoning.
Based on Activity 12.1, infer what happens to the magnetic field's strength as the electric current passing through the wire increases. Explain your reasoning.
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In the context of the chapter, why is it important to establish that 'electricity and magnetism are linked to each other'?
In the context of the chapter, why is it important to establish that 'electricity and magnetism are linked to each other'?
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Predict what would happen to the compass needle if the copper wire in Activity 12.1 was replaced with a rubber wire. Justify your answer.
Predict what would happen to the compass needle if the copper wire in Activity 12.1 was replaced with a rubber wire. Justify your answer.
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State the relationship between the direction of electric current and the magnetic field it produces.
State the relationship between the direction of electric current and the magnetic field it produces.
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Explain how the discovery of electromagnetism impacted the development of technology.
Explain how the discovery of electromagnetism impacted the development of technology.
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Flashcards
Magnetic Effect
Magnetic Effect
The phenomenon where electric current produces a magnetic field.
Hans Christian Oersted
Hans Christian Oersted
A scientist who discovered the relationship between electricity and magnetism.
Compass Needle Deflection
Compass Needle Deflection
Movement of a compass needle when near a current-carrying wire.
Electromagnet
Electromagnet
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Electric Current
Electric Current
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Magnetic Field Strength
Magnetic Field Strength
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Relationship of Electricity and Magnetism
Relationship of Electricity and Magnetism
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Deflection Observation
Deflection Observation
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Electric Circuit
Electric Circuit
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Electromagnetic Effects
Electromagnetic Effects
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Magnetic Effect of Current
Magnetic Effect of Current
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Electric Current During Experiment
Electric Current During Experiment
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Compass Needle Behavior
Compass Needle Behavior
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Oersted's Discovery
Oersted's Discovery
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Electromagnetic Relationship
Electromagnetic Relationship
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Hans Christian Oersted's Contribution
Hans Christian Oersted's Contribution
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Electric Field Influence
Electric Field Influence
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Compass Testing Method
Compass Testing Method
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Electromagnets Defined
Electromagnets Defined
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Oersted's Honor
Oersted's Honor
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Study Notes
Magnetic Effects of Electric Current
- Electric current-carrying wires behave like magnets.
- Activity 12.1 demonstrates this:
- A straight copper wire is placed between points X and Y in a circuit.
- The wire is perpendicular to a piece of paper.
- A compass is placed near the wire.
- Current is passed through the circuit.
- The compass needle deflects.
- This demonstrates that electric current produces a magnetic effect.
- Electricity and magnetism are linked.
- The chapter will explore the reverse possibility of a magnetic effect causing an electric effect.
- Electromagnets, which involve the magnetic effect of electric current, will also be studied.
Hans Christian Oersted
- A key figure in understanding electromagnetism.
- In 1820, Oersted accidentally discovered the connection between electricity and magnetism.
- He observed that a compass needle deflected when an electric current passed through a nearby wire.
- This discovery established a link between electricity and magnetism.
- The unit of magnetic field strength, the oersted, is named in his honor.
- This unit is used to measure magnetic field strength.
- Oersted was a leading 19th-century scientist.
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Description
Explore the magnetic effects of electric current, as demonstrated by the deflection of a compass needle near a current-carrying wire. Discover electromagnetism and learn how electricity and magnetism are interconnected. Also, learn about Hans Christian Oersted's discovery.