Basics
What is used to measure electric current?
What is an ammeter?
A walkman uses a standard 1.5 V battery. How much resistance is in the circuit if it uses a current of 0.01A?
150 Ohms
In a series circuit, how does the current behave across each resistor?
What is the current remains the same
What does it mean when an energy resource is said to be “renewable”?
Renewable resources regenerate or can be replaced in a relatively short time period (such as the length of a human life).
Name one good electrical conductor.
What is copper? (Also accept: aluminum, silver)
These particles can be easily added or removed from an atom.
Electrons
A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?
1.3 A
What happens to all the bulbs if one goes out in a series circuit?
All the bulbs go out because the circuit is broken.
Give three examples of renewable energy resources.
solar energy
geothermal or natural steam energy
wind energy
hydro or tidal energy
biomass, including wood, plant fibers, dried animal dung (waste)
What is rubber? (Also accept: plastic, glass)
What is resistance?
What is the opposition to the flow of electric current?
A 9 V battery powers a series circuit with three identical resistors. Each resistor has a resistance of 3 Ω. What is the total resistance?
What is 9Ω
What happens if one branch in a parallel circuit is disconnected or fails
Other branches continue to work; the circuit does not break entirely
What are “fossil fuels”? Which non-renewable energy resources are “fossil fuels”?
They are called fossil fuels because they were formed over millions and millions of years by the action of heat from the Earth's core and pressure from rock and soil on the remains (or "fossils") of dead plants and animals. They include coal, natural gas, and petroleum.
Why are wires coated in plastic?
What is to insulate them and protect from shocks?
What type of charge do electrons have?
What is a negative charge?
Three resistors (2 Ω, 4 Ω, and 6 Ω) are connected in series. What is the total resistance?
What is 12 Ω
In a parallel circuit, what happens to the total current as more branches are added
What energy resource is most commonly used to make electricity?
Coal
True or False: Water is a good conductor of electricity
What is true
What are the three basic parts of a simple electric circuit?
What are a power source, a load (device), and wires?
A circuit is powered by a 24 V battery and contains three resistors connected in series:Resistor 1 = 4 Ω Resistor 2 = unknown Resistor 3 = 8 Ω
The current flowing through the circuit is 1.2 A.What is the value of the unknown resistor (Resistor 2) ?
What is 8Ω
As you increase the length of a wire, its electrical resistance will
What are the three main types of air pollutants produced by electrical power plants
1 carbon dioxide
2 sulfur dioxide
3 nitrogen oxide
What property of metals makes them good conductors?
What is free-moving electrons?