Why is copper wire a better conductor of electricity than carbon fiber?(1 point)
Copper (Cu) has no loose electrons.
Copper (Cu) is a metal, and only metals can conduct electricity.
The electrons in copper (Cu) are loosely bound to the nucleus.
Carbon (C) does not have any valence electrons.
Which of the following best describes a direct current?(1 point)
a stationary electrical charge
the flow of electric charges through a conductor
an electrical current that flows in alternating directions back and forth
an electrical current that flows in one direction
Which of the following substances would allow an electric current to flow through it easily?(1 point)
carbon (C)
aluminum (Al)
rubber
glass
Which of the following statements about electrical charges is true?(1 point)
Opposite charges attract one another.
Opposite electrical charges repel one another.
Like charges and opposite charges have no effect on one another.
Like charges attract one another.
Which of the following statements best describes the relationship between atoms and conductivity?(1 point)
Atoms with many electrons make good insulators.
Atoms with few electrons make good conductors.
Atoms with a nearly empty valence shell make good conductors.
Atoms with a full valence shell make good conductors.
The correct answers are:
- Why is copper wire a better conductor of electricity than carbon fiber? (1 point)
The electrons in copper (Cu) are loosely bound to the nucleus.
- Which of the following best describes a direct current? (1 point)
An electrical current that flows in one direction.
- Which of the following substances would allow an electric current to flow through it easily? (1 point)
Aluminum (Al).
- Which of the following statements about electrical charges is true? (1 point)
Opposite charges attract one another.
- Which of the following statements best describes the relationship between atoms and conductivity? (1 point)
Atoms with a nearly empty valence shell make good conductors.
To determine why copper wire is a better conductor of electricity than carbon fiber, we need to understand the properties of these materials.
Copper (Cu) is a better conductor of electricity than carbon fiber because of its atomic structure. Copper atoms have loosely bound electrons, which means they are free to move within the material when an electric charge is applied. This mobility of electrons allows copper to easily transmit electrical currents. On the other hand, carbon (C) does not have any loose or free electrons, making it a poor conductor of electricity.
So, the correct answer is: The electrons in copper (Cu) are loosely bound to the nucleus.