Question

The images show two steps in a procedure a student used to examine an electric circuit. Which question might the student be investigating?
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1 point
Captionless Image
How does changing the voltage affect the brightness of a light bulb?
How does an open circuit compare with a closed circuit?
Is a light bulb an electric insulator or an electric conductor?
Is more energy transformed in an electric circuit in a light bulb or in a wire?
Which of the following statements about the forces between charged objects is not true?
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1 point
As the distance between charged objects decreases, the electric force between them decreases.
If one object is positively charged and another is negatively charged the objects will attract each other.
Two negatively charged objects will repel each other.
As the amount of charge on either object decreases, the electric force between them decreases.
As a nail approaches the south pole of a magnet, what happens to its magnetic domains?
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1 point
The north poles of the domains point toward the magnet.
The south poles of the domains point toward the magnet.
The domains spin, but end up in no particular pattern.
The domains remain unaffected by the magnet.

Answer 1

1. **Question the student might be investigating:**
- **How does changing the voltage affect the brightness of a light bulb?**

2. **Which of the following statements about the forces between charged objects is not true?**
- **As the distance between charged objects decreases, the electric force between them decreases.**

3. **As a nail approaches the south pole of a magnet, what happens to its magnetic domains?**
- **The north poles of the domains point toward the magnet.**