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Questions and Answers
Which of the following is an effect of electric current?
Which of the following is an effect of electric current?
- Cooling
- Expansion
- Heating (correct)
- Vibration
What happens to a compass needle when an electric current is passed through a copper wire?
What happens to a compass needle when an electric current is passed through a copper wire?
- It remains stationary
- It gets deflected (correct)
- It becomes demagnetized
- It moves in a circular motion
What is the orientation of the copper wire in the activity described in the text?
What is the orientation of the copper wire in the activity described in the text?
- Parallel to the plane of paper
- At an angle to the plane of paper
- Perpendicular to the plane of paper (correct)
- Curved
What does the deflection of the compass needle indicate?
What does the deflection of the compass needle indicate?
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What is the purpose of inserting the key into the plug in the activity?
What is the purpose of inserting the key into the plug in the activity?
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