-Electric Current is created when a power source, normally a battery, is attached to a closed wire circuit.
Resistance- Resistance is a measure of the degree of resistance an object poses to passing electrical current.
Ohm's law describes the relationship between Current, Voltage, and Resistance.
Ohm's Law- "The potential difference (voltage) across an ideal conductor ir proportional to the current through it. V=IR
V = Volts I = Current and R = Resistance
Series Circuit: All lights are arranged in a row with only one path for the electricity to flow through them. The resistance of a series circuit is found by adding up the resistance of each lightbulb. The farther away a bulb is from the power source in a series circuit the dimmer the bulb.
Parallel Circuit: All lights are arranged in a way that there is as many paths for the electricity to flow through as there is lightbulbs. In a parallel series the resistance is found by using the formula R = 1/((1/R1) + 1/(R2) + 1/(R3)). All the bulbs have the same amount of current flowing through them so all the bulbs have the same brightness.
Fuse- A fuse is used in a electric circuit to limit the amount of voltage that can flow through the circuit. After the voltage hits a certain level the fuse will blow and save the circuit, then once the fuse is replaced the circuit will work again as no damage was done to it from the voltage overload.
Short Circuit- A short circuit is when a large amount of current is pushed through a wire causing a rapid builup of heat. Short circuits can be dangerous because the can result in fire and/or eplosions.
Cicuit breakers are used to control the flow of electricity into a home. If to much electricity is going into the house a breaker is "thrown" and the electricity flow stops until the problem can be fixed, avoiding potential fires from wiring problems.