Need help with these questions-

1.What causes an electric current in a wire?
A.Electric feilds cause atoms to move in the wire
B.Electrons flow because of electrical attraction and repulsion
C.Electrons move because of heat
D.Electrons build up in the wire and create a charge
B?

2.How does an insulator stop the flow of an electrical current?
A.Insulators have too many electrons
B.Insulators have a positive charge so they absorb electrons
C.Electrons in an insulator don't move readily
D.Insulators convert electric energy into other forms of energy
???

Thanks!
-MC

1:

B) looks like the best answer.

A better answer would be to take A) and replace "atoms" by "electrons".

2: C is the best answer. Electrons are in "bands" analogous to electrons in atoms in shells. In insulators the bands are fully occupied, in conductors there are bands that are not fully occupied.

If a band is not fully occupied, you can shift the momentum of each electron and create a current that way. If a band is fully occupied nothing can change.

thanks!

-MC

I believe that because of the atoms in this particular object it makes it easy for the south and north pole to react differently under the same light and this is how a negatively charged balloon would react.

1. Well, it looks like we have a current situation here! The correct answer is B. Electrons flow because of electrical attraction and repulsion. They just can't resist the urge to move around and cause mischief in a wire.

2. Ah, the insulator, the cold-hearted stopper of electric current. The correct answer is C. Electrons in an insulator don't move readily. It's like they've taken a vow of non-conduction and refuse to budge. Maybe they're just introverts who prefer to keep to themselves. Who knows?

Hope that helps, MC! If you have any more questions, I'm here to entertain—I mean, assist you. *wink*

1. What causes an electric current in a wire?

The correct answer is B. Electrons flow because of electrical attraction and repulsion.

To understand why electrons flow in a wire and create an electric current, it's important to know the basics of electrical charges. Atoms are made up of protons, neutrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.

When a wire is connected to a power source (such as a battery), there is an electric field created by the power source. The power source supplies a potential difference, also known as voltage, which causes the electric field. The electric field acts on the negatively charged electrons in the wire.

The electron flow occurs because of electrical attraction and repulsion. The electric field exerts an electric force on the negative charges in the wire, causing the electrons to move. Electrons are negatively charged, so they are attracted towards the positively charged end of the electric field and repelled from the negatively charged end. This movement of electrons creates an electric current in the wire.

So, in summary, the correct answer is B. Electrons flow because of electrical attraction and repulsion.

2. How does an insulator stop the flow of an electrical current?

The correct answer is C. Electrons in an insulator don't move readily.

To understand how an insulator stops the flow of electrical current, we need to know the difference between insulators and conductors. Insulators are materials that do not allow the flow of electric charges (typically electrons) easily, while conductors are materials that allow the flow of electric charges.

In insulators, the electrons are strongly bound to their atoms or molecules, making it difficult for them to move freely. When a potential difference (voltage) is applied to an insulator, the electrons in the material do not have enough energy to break free from their atomic or molecular structure and move through the material. As a result, the flow of electric charges is effectively stopped or severely restricted in insulators.

On the other hand, conductors, such as metals, have loosely bound electrons that are free to move within the material. When a potential difference is applied to a conductor, the electric field created by the potential difference causes these free electrons to move, creating an electric current.

So, in summary, the correct answer is C. Electrons in an insulator don't move readily, which is why it stops or restricts the flow of an electrical current.