Electricity Quiz Flashcards
A closed path in which an electric current travels
Circuit
A measurement of the available electric force to push an electric charge through a circuit.
Voltage
A measurement of how difficult it is for an electric charge to flow through a material.
Resistance
What is it called when unbalanced electric charges become balanced?
Electric discharge
What does there need to be for an electric current to flow in a circuit?
Closed path
How is electric current measured?
Amps: how many electrons pass through the wire each second.
How do batteries work?
The electrons in the battery move to the proton side and and light up the lightbulb along the way.
The movement of electrons in a controlled manner
Electric current
How do batteries die?
Batteries die when the chemicals in them that make one side positive and the other side negative chemically change into other chemicals. Now the electrons don’t have any way to get to the other side.
What has a higher resistance than conductors?
Insulators
When electrons move through a wire, their energy can be converted into what?
Heat and light energy.
Is it good for heat and light energy to be in a wire?
No, because it could cause a fire 🔥
Why is copper a good material for home wiring?
It has low resistance, and it’s a conductor, which means it allows electricity to move quickly through it
Electrical resistance of a wire increases as it becomes…
Narrower or longer
How is light produced in a lightbulb?
The energy of the electrons moving through the wire gets slowed down by the resistors in the light bulb. The energy gets converted into heat and light energy, and the lightbulb lights up.
