Electric Basics
This is the flow of electric charge
what is current
A complete path for electricity to flow
Formula that relates voltage, current, and resistance
What is V=I*R
Like poles ________ and unlike poles __________.
What is repeal and attract
A magnet created by an electric current
What is an electromagnet
The unit used to measure electric current
what is ampere (amps)
A circuit with only one path for current
What is a series circuits
Calculate current: V = 12V, R = 4Ω
What is 3 amps
What is the region around a magnet where forces act called?
What is Magnetic Field
Increasing the current will do this to an electromagnet.
What is make it stronger
This particle carries a negative charge
what is an electron
A circuit with multiple paths for current
what is a parallel circuit
Resistance is measured in this unit.
What is Ohms
What happens if you cut a magnet in half?
You get two smaller magnets, each with a north and south pole
Adding more loops to a coil affects the magnetic field how?
What is it increases the strength
The push that causes charges to move
what is voltage
A device used to open or close a circuit
What is a switch
If the voltage increases and the resistance stays the same, the current will do this
What is increase
What happens to the magnetic force when you increase the distance?
What is decrease
Adding this material inside a coil strengthens the magnet.
What is an iron core
Materials that allow electricity to flow easily
what are conductors
What is a load?
what is whatever the circuit is powering
If resistance increases, current will do this (assuming voltage stays the same).
What is decrease
What causes a material to become magnetized?
Alignment of magnetic domains
Increasing resistance in a circuit (with constant voltage) affects the electromagnet how?
What is it weakens because current decreases