Topic 1
What is the difference between a conductor and an insulator? Provide an example of each.
Conductors allow electrons to flow through, ex. metals, water. Insulators do not allow electrons to flow through, ex. non-metals, wood, rubber.
What are two of Jimmy's Rules?
What is the difference between a series and parallel circuit?
Series circuit has only one path for electricity to flow. Parallel circuits have multiple pathways for electricity to flow.
What are two things that can affect resistance?
2 of the following: Wire Gauge, Wire Length, Temperature, Material
What is the voltage of a common house outlet?
120 V
True or False: Like Charges Attract.
False; Like charges REPEL
What happens if Jimmy doesn't make it back to headquarters?
The circuit is incomplete, the delivery is incomplete.
Draw a series circuit powered by a 2-cell battery, flowing to a switch, then 2 lightbulbs, then returning to the battery.
(See image drawn by instructor)
Rearrange Ohm's Law to solve for Current.
I = V / R
What is the current of a common household outlet?
15 A or 20 A
What are 3 points of the Law of Electric Charges?
3 of the following: Charge cannot be created or destroyed, Opposite charges attract, Like charges Repel, Charged objects attract uncharged objects.
Draw the circuit symbols for a resistor, open switch, 3-cell battery, and a light/lamp.
(See image drawn by instructor)
What happens when there is multiple lightbulbs in a series circuit? Does the same thing happen in a parallel circuit?
The more lights there are in a series circuit, the dimmer they become. In a parallel circuit, if the lights are in different branches, the lights are all bright (no dimming occurs)
Current is the flow of electrons, Voltage is the "push" force moving the electrons, Resistance slows the flow of electrons.
Why is it a bad idea to go swimming during a thunder storm?
Water is a conductor, you have a higher likelihood of getting struck/electrocuted by lightning.
How is static electricity produced?
What is the term for the item that is using the electricity?
Load
What happens to a parallel circuit if there is a break in the wire BEFORE it branches into multiple paths?
The whole circuit will fail.
From the Water Bottle Demo, what does it mean when there is a small hole in the lid in terms of resistance and current?
Explain what is happening when you rub a balloon against your hair?
The electrons are being transferred to the surface of the balloon and are collected to produce a charge.
What are the two ways to reduce charge?
Grounding, Ionization, anti-static spray
What are the 4 main parts of a simple circuit?
Load (light bulb), Control (switch), Source (battery), Conductor (wire)
What is a disadvantage of a parallel circuit?
It uses more wires.
Solve the following equation:
Resistance = 20 Ohms, Current = 15 A, what is Voltage?
V = R x I = 20 Ohms x 15 A = 300 V
What is more dangerous: current or voltage?
Current; the amount of electric flow is what is dangerous.