Electricity 1
Electricity 2
Electricity 3
Electricity 4
Electricity 5
100
Materials that allow electricity to move through it easily
Conductor
100
Materials that do not allow electricity to move through them easily
Insulator
100
Ohm's Law tells us that current depends on what 2 variables?
voltage and resistance
100
The flow of electrons is called
Electric current
100
Besides a plug in, give an example of an energy source for a circuit
Battery
200
Plastic, glass, and rubber are good examples of
Insulators
200
Like charges will
repel
200
How much current would flow through a circuit that has 12 volts and 2 ohms of resistance (must include unit)?
6 amps
200
Copper is an example of _______.
A conductor.
200
What energy conversion occurs in a generator
mechanical to electrical
300
Current is the flow of ___________________
charged particles
electrons
300
When electric current flows along a closed path it forms a ______.
Electric circuit.
300
True or false: in a series circuit, there is only one pathway for the current to flow
TRUE
300
Name an advantage of direct current
can be used to power devices that are portable and dont have to be plugged in
300
What kind of energy conversion occurs in a motor?
electrical to mechanical
400
What type of current do you get from the power company?
Alternating current
400
Atoms are made up of?
Electrons, protons and neutrons.
400
In this circuit, what would happen if one of the bulbs got broken?
The other bulb would not light up
400
Name an advantage of alternating current
you can easily change the voltage
it can go long distances without losing energy
400
Name 2 ways to increase the strength of an electromagnet
more coils
more voltage
larger iron core
500
When we connect a wire to a battery _______from the ______ pole move to the ________pole.
Electrons from the negative pole move to the positive pole.
500
What is the difference between an open circuit and a closed circuit?
Closed - electrons can flow and the circuit is working
Open - electrons cannot flow and the circuit is not working
500
If resistance in a circuit increases, then the voltage will
not be affected
500
What happens when two objects rub against each other?
They gain or lose electrons.
500
A thicker wire in a circuit will cause resistance to ___________________
decrease