Question

(1)Can two negatively charged balloons move apart without ever touching? Why or why not?


(2)What causes an electric current in a wire?


(3)Why does a light go out when the wall switch is turned off?


(4)A bar magnet is dipolar.
This means it has how many poles?

Answer 1

1.) Yeah, two balloons that have the same negative charge can move away from each other without touching. This happens because things that have the same charge push away from each other, like magnets that repel each other. When the balloons are close to each other, they get pushed away because of this force, even if they're also getting pulled by other forces like gravity or the air. The exact distance they can be apart before they stop moving depends on how big they are and how much they're charged. But as long as the pushing force is stronger than the other forces, the balloons will keep moving away from each other.

Answer 2

which would match it better?

Yes, because electrons from one balloon jump to the other and push it.

Yes, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

Answer 3

2.) Electric current happens when electrons move through a wire. The electrons are pushed by a voltage difference, which makes them move from the negative end of the wire to the positive end. Sometimes the electrons are already in the wire, and sometimes they come from a battery. The amount of current depends on the voltage, how much the wire resists the current, and what the wire is made of. We can use Ohm's law to figure out how much current will flow through a wire.

Answer 4

3.) When you turn off a light switch, you stop electricity from flowing to the light bulb. Without electricity, the filament in the bulb can't stay hot, so it stops emitting light.

Answer 5

so like it causes a break in the circuit, right??

Answer 6

4.) A bar magnet has two poles, a North pole and a South pole, which make it dipolar.

Answer 7

I have to go now. I hope you do amazing in this assignment!

Answer 8

ok tysm!!