Lesson 1
What type of charge occurs when 2 objects are rubbed together?
Friction
Gold, Copper, and Steel are all examples of what?
Conductors
What are the 4 main parts of a circuit?
Energy source, Conducting Wires, Switch, Resistor
What unit is used to measure electric power
Watts
Rubbing a balloon against a shirt allows more electrons to move onto the balloon. The balloon is now more _______ charged?
Negatively
Electric Current
Draw a series and parallel circuit
...
Any circuit connected to the earth
Grounded
The transfer of electrons from a cloud to the ground during a lightning strike is an example of ______
Static Discharge
The measure of how difficult it is for charges to flow through an object
Resistance
Resistance, voltage, and current are all related to what law?
Ohm's Law
Convert 50 Watts to Kilowatts
0.05
Electrons reacting to the electric field of a charged object without touching the object itself is an example of ______
Induction
Electrons in _____ cannot move freely causing charges to not flow
Insulators
If an object has a voltage of 9 volts and a current of 3 amps, what is the resistance?
3 ohms
An appliance draws 40 A of current and has a 12-V battery. What is the power?
480W
Charges are neither created nor destroyed is an example of what law?
Law of conservation of charge
You want to build a device that can conduct current. The device includes a conductor and insulator. Which of the following pairs of materials could you use?
A: Glass and Rubber
B: Silver and Plastic
C: Sand and Plastic
D: Copper and Silver
B: Silver and Plastic
Find the resistance of a circuit with a voltage of 120 V and a current of .01 KW
12 Ohms
Connection that allows a current to take the path of least resistance.
Switches that will bend away from circuits as they heat up.
Short Circuit
Circuit Breakers