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Questions and Answers
What is the purpose of the activity described in the text?
What is the purpose of the activity described in the text?
- To show that a closed circuit is necessary for electricity to flow
- To observe the variations in voltage with different wire materials
- To illustrate that electric current passing through a conductor produces a magnetic effect (correct)
- To demonstrate the directional properties of magnets
Why is it important to use insulated copper wire in the activity?
Why is it important to use insulated copper wire in the activity?
- To make the compass needle spin continuously
- To prevent electric shocks (correct)
- To reduce the resistance in the circuit
- To increase the magnetic effect of the current
How would the observation change if the switch in the activity was turned off?
How would the observation change if the switch in the activity was turned off?
- The needle would spin rapidly
- The needle would point due north
- The needle would show no deflection (correct)
- The needle would repel the wire
Which of the following best describes the magnetic effect produced by a current-carrying conductor?
Which of the following best describes the magnetic effect produced by a current-carrying conductor?
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How does the effect of current on a magnetic compass relate to magnets?
How does the effect of current on a magnetic compass relate to magnets?
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What is the significance of observing the deflection of a magnetic compass near a current-carrying wire?
What is the significance of observing the deflection of a magnetic compass near a current-carrying wire?
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