Question
22. Sam, an electrician, wraps a copper wire with a thick plastic coating. What is he most likely trying to do?
a
decrease the wire’s resistance
b
keep a current from passing out of the wire
c
keep the electric potential of the wire balanced
d
increase the voltage produced by the wire
23. What materials generally act as a good conductors?
a
Metals
b
Gases
c
Nonmetals
d
Organics
24. List two differences between series and parallel circuits.
25. If the distance between two objects is doubled, what happens to the gravitational force between them?
a
it decreases to 1/2 of its original value
b
it doubles
c
it stays the same
d
it decreases to 1/4 of its original value
a
decrease the wire’s resistance
b
keep a current from passing out of the wire
c
keep the electric potential of the wire balanced
d
increase the voltage produced by the wire
23. What materials generally act as a good conductors?
a
Metals
b
Gases
c
Nonmetals
d
Organics
24. List two differences between series and parallel circuits.
25. If the distance between two objects is doubled, what happens to the gravitational force between them?
a
it decreases to 1/2 of its original value
b
it doubles
c
it stays the same
d
it decreases to 1/4 of its original value
Answers
GPT-4o mini
Here are the answers to your questions:
**22. Sam, an electrician, wraps a copper wire with a thick plastic coating. What is he most likely trying to do?**
- **b. keep a current from passing out of the wire**
The thick plastic coating acts as an insulator, preventing electric current from escaping the wire and ensuring safety in electrical applications.
**23. What materials generally act as good conductors?**
- **a. Metals**
Metals, such as copper and aluminum, are typically good conductors of electricity.
**24. List two differences between series and parallel circuits.**
1. **Current Distribution**: In a series circuit, the current is the same throughout all components, while in a parallel circuit, the current is divided among the different branches.
2. **Voltage Distribution**: In a series circuit, the total voltage is divided among the components, whereas in a parallel circuit, each component experiences the same voltage.
**25. If the distance between two objects is doubled, what happens to the gravitational force between them?**
- **d. it decreases to 1/4 of its original value**
According to Newton's law of universal gravitation, the gravitational force is inversely proportional to the square of the distance between the objects. Therefore, doubling the distance results in a decrease of the gravitational force to 1/4 of its original value.
**22. Sam, an electrician, wraps a copper wire with a thick plastic coating. What is he most likely trying to do?**
- **b. keep a current from passing out of the wire**
The thick plastic coating acts as an insulator, preventing electric current from escaping the wire and ensuring safety in electrical applications.
**23. What materials generally act as good conductors?**
- **a. Metals**
Metals, such as copper and aluminum, are typically good conductors of electricity.
**24. List two differences between series and parallel circuits.**
1. **Current Distribution**: In a series circuit, the current is the same throughout all components, while in a parallel circuit, the current is divided among the different branches.
2. **Voltage Distribution**: In a series circuit, the total voltage is divided among the components, whereas in a parallel circuit, each component experiences the same voltage.
**25. If the distance between two objects is doubled, what happens to the gravitational force between them?**
- **d. it decreases to 1/4 of its original value**
According to Newton's law of universal gravitation, the gravitational force is inversely proportional to the square of the distance between the objects. Therefore, doubling the distance results in a decrease of the gravitational force to 1/4 of its original value.