ELECTRICITY. Electric Charge. Atoms are made up of 3 particles Neutrons have a neutral charge. Protons have a positive charge. Electrons have a negative charge. An atom is electrically neutral if the number of electrons EQUALS the number of protons
And likes repel
These fields can push or pull over distances
Conductors= materials which allow excess electrons to easily move through them.
Examples : metals, water
The Earth also functions as a conductor.
Insulator= a material that doesn’t allow electrons
to move through it easily
Examples : plastic around wires, wood doors, fiberglass, rubbers
Notice what the handles are made of. Why?
Large static discharge
Air masses move and swirl
Negative charge induces a + charge
on ground (repel e-)
Bottom accumulates enough -
Positive charges are attracted
Electrons in cloud attracted
Electric charges move through air collide with atoms/molecules
Collisions cause atoms/molecules to emit light
in the air
Produce great amounts of heat
Powerful sound waves
Connection (conductor) will transfer any excess electric charge
“Grounding” – the act of making a connection for an electric charge to go to the Earth
Longer, thin wires have MORE resistance than short, thick wires
Potential Energy (height)
The potential difference (voltage) is 1.5 V.
To Lower Energy
cause the light bulb to stop glowing?
It is the only switch in series to both the battery and light.
A. 0.22 amp
B. 4.5 amps
C. 11.0 amps
D. 18.0 amps
V = I R so,
9V = I x 2 ohms or 4.5 amps
1729 A.D. Stephen Gray classifies materials as either conductors or insulators
He saw that the fibers on the string were standing up and also received a shock from the key when he touched it.