3.1 How is electrical energy part of your world?
3.2 The Law of Electric Charge
3.3 How do charges flow through the components of a circuit?
3.4 How are circuits used in practical applications?
Miscellaneous
100
Where does BC get most of its energy?
What is Hydro ?
100
What will happen if you rub two different materials together?
What is "Electrons may rub off one material and be transferred to the other" ?
100
A device that converts electrical energy into another form of energy is a ________
What is " Load" ?
100
V= IR
v is the symbol for
What is " Electrical potential difference" ?
100
True or False :
An ENERGY STAR® label identifies a product as meeting or exceeding certain standards for energy efficiency.
What is " True" ?
200
What type of reactions occur in the sun?
What is Fusion reactions ?
200
Match:
1. Positive charge A. electron
2. negative charge B. law of electric charge
3. like charges repel each C. proton
other
What is 1-C, 2-A, 3-B ?
200
The degree to which the flow of current is hindered is called _________
What is " Resistance" ?
200
V= IR
I is the symbol for _____, R is the symbol for ____
What is " Current and resistance " ?
200
What is phantom load ?
What is " the electrical energy a device uses when it is turned off" ?
300
Which type of energy is transformed into electrical energy by a generator system?
what is Rotational energy ?
300
A material charges cannot travel through --------
What is " insulator" ?
300
An __________ forms when a source , load, and conductor are connected in a way that allows current to flow.
What is " electrical circuit" ?
300
In a ______ circuit, current can only flow along one path. In a ______ circuit, there is at least one branch point where current splits into two or more pathways.
What is " series , Parallel" ?
300
Electrical power is measured in ________
What is " Watts" ?
400
What role thermal energy play in the generation of electrical energy from nuclear reactions?
What is " Thermal energy from the reactions is used to boil into stream, which turns a turbine of a generator system" ?
400
A van de Graaff generator is a device that can build and transfer a large amount of __________
What is "charge"?
400
When a unit of charge passes through a source, such as a cell or battery , it gains electrical potential energy. The quantity used to measure this is called _______
What is " Electrical Potential difference" ?
400
When a light bulb burns out in your house all the other lights stay on. What type of circuit is this? Why?
What is " Parallel because there are many paths for the electricity to flow. When the lightbulb burns out only that path is broken but all the other paths remain complete" ?
400
Explain the flow of current in the following circuit diagram?
What is " Current cannot flow because the switch is open" ?
500
A calculator uses a photovoltaic cell and a backup battery. Which of the following types of energy does the calculator use?
What is " Solar energy and chemical energy" ?
500
Why can protons not be rubbed off one material and transferred to the another?
What is "They are part of the nucleus of atoms and are held firmly in place" ?
500
Why can a short circuit be dangerous?
What is " The current can get so high that the conductor can get hot enough to start a fire" ?
500
What two pieces of information would you need to find the current flowing through your cellphone?
What is " the electrical potential difference of the battery and the resistance of the phone" ?
500
How does a cell work?
What is " Chemical reactions separate positive and negative charges. Because work goes into separating the charges, the electrons now have the energy to do other work, like running a laptop" ?