Is it true or false that batteries convert chemical energy to electrical energy?
True
100
In terms of electricity, what does AC stand for?
Alternating current
100
Is it true or false that you can extend battery life by storing batteries at a low temperature?
True
100
Do conductors have a high or low resistance?
Low
200
In terms of electricity, what does DC stand for?
Direct current
200
Where did the energy stored in fossil fuels originally come from?
Sunlight
200
What term is the following definition defining?
The flow of electrons from atom to atom in a conductor.
Electricity
200
Electric power is typically measured in what units?
Watts
200
Poor conductors of electricity consist of
A. silver
B. aluminum
C. water
D. copper
C. Water
300
If a substance gains electrons, does it become positively or negatively charged?
Negatively charged
300
Is wind power a renewable or non-renewable energy source?
Renewable
300
Has two or more paths for current to flow through. Voltage is the same across each component.
What is this statement defining?
Parallel Circuit.
300
Electrical resistance is usually measured in what units?
Ohms
300
Ions are charges particles, formed when an atom
A. gains electrons
B. loses electrons
C. gains or loses electrons
D. shares electrons
C. Gains or loses electrons
400
Parallel circuits are useful because ...?
A. They require less wiring.
B. All other components keep working even when one fails.
C They use less electricity.
B. All other components keep working even when one fails.
400
An object at rest on top of a shelf is likely to have:
- no energy
- gravitational potential energy
- hydroelectric power
Gravitational potential energy
400
What is the name of the wire inside an electric bulb?
Filament
400
A magnet produced by passing an electric current through and insulated wire conductor coiled around a core of soft iron, as in the fields of a dynamo or motor. What is this?
An electromagnet
400
An example in which light emitting diodes are used is
A. calculator
B. hard drive
C. optical drive
D. analog watch
A. A calculator
500
For an electrical current to flow through an electrical circuit you need...?
A. Only a complete circuit.
B. A supply current and a complete circuit.
C. Only a supply current.
B. A supply current and a complete circuit.
500
Which of the following is a non-renewable energy resource?
- wind power
- biomass
- natural gas
Natural Gas
500
A person who is versed in the knowledge of electricity. Who is this?
Electrician
500
Who was it who first introduced the concept of electric fields?
Michael Faraday
500
In conductors, electrons can flow because their
A. ions are free
B. protons are free
C. electrons are free and mobile
D. negative ions are free