Electricity I
The charge of electrons.
What is negative?
How you get a balloon to stick to your head
static electricity
A device that can open or close a circuit.
switch.
Oppositely charge objects _____________ each other.
attract.
Which is a good electrical conductor: A) plastic B) wood C) rubber D) metal
D) metal.
It includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays.
What is the electromagnetic spectrum?
The type of circuit where there is only one path for the current to take.
series circuit.
Electrons in a circuit are pushed away from a battery's ____________ pole.
negative.
All matter is made of___________
atoms
A battery converts chemical energy into _______________.
electrical energy.
A flow of electricity through a conductor.
electric current.
an object or type of material that allows the flow of charge.
What is a conductor
Resistance to electricity is measured in ___________.
ohms.
The tendency for a material to oppose the flow of electrons, changing electrical energy into heat energy and light.
Resistance
A lamp can transfer the electrical energy into ................ and ............... energy.
light and heat
An object in an electrical circuit that resists the flow of electrons.
resistor.
Circuits must have an unbroken path of conductors and a ____________ that causes the electrons to move along the path.
voltage source.
The amount of electric current moving in a circuit is measured in ________________.
amps or amperes.
Homes are wired in __________.
A: series circuit
B: parallel circuit
B: parallel circuit
Ohm's Law
Connecting an object to Earth with a conducting wire to prevent the build up of electrons.
grounding.
The type of circuit in which there are several paths for the current to take.
parallel circuit.
Electrons in a circuit are pulled toward the battery's __________ pole.
positive.
Adding branches to a parallel circuit _________ current.
increases.
Works on the principle that an electric current in a wire produces a magnetic field.
What is an electromagnet?