Science
Electrifying Science Quiz
Test your knowledge of electricity, magnets, and the science behind circuits with our engaging quiz! Challenge yourself and see how much you really know about the fundamental concepts of electrical engineering.
- 16 thought-provoking questions
- Designed for learners of all levels
- Learn while you play!
A diode is a semiconductor that is used to
Create a magnetic field
Turn the flow of electricity on and off
Amplify electrical signals
Allow current to flow in only one direction
A direct electrical current is different from an alternating current because only the direct electrical current
Can be converted to other forms of energy
Allows the flow of electrons in one direction
Produces a high voltage
Fows without resistance
What energy transformation occurs in a generator?
Kinetic energy is transformed into potential energy
Mechanical energy is transformed into electrical energy
Electrical enerey is transformed into mechanical energy
Chemical energy is transformed into electrical energy
What is the flow of electrons?
Negative to neutral
Positive to negative
Negative to positive
Negative to negative
During a thunderstorm, Danny watched flashes of lightning through his window. Which process BEST describes the cause of lightning?
Heat energy jumping betweon warmer & colder cloud
Charged particles moving between positively and negatively charged parts of the cloud
Radioactive atoms in the atmosphere exploding Between clouds
Chemicals from different clouds combine to make energy
In order to turn on the light, a piece of wire needs to be connected from -
B to C
A to D
A to C
C to D
If building a new house, what type of circuits should you use?
Static Circuit
Parallel Circuit
Series Circuit
Positive Circuit
If Bulb 8 burns out, how will the remaining bulbs be affected?
All the remaining bulbs stay lit
Bulb 4 goes out, all the other remain lit
Only bulbs 1 - 4 stay fit
All the remaining bulbs go out
Not all metals are magnetic. What are the magnetic elements? Select all of them below.
Cobalt
Aluminum
Iron
Nickel
Copper
Silver
A temporary magnet made from an iron nail, wire, and
A motor
An electromagnet
An electric motor
A generator
Where is the magnetic field the strongest?
At both poles
At North Pole only
At South Pole only
In the middle
Students make an electromagnet by wrapping a copper wire around an iron core and attach both ends of the wire to a battery. They decide to change the length of wire, amount of coils, and amount of batteries. Using the data below, what conclusions can you make about this experiment?
The electrical field is proportional to the length of the wire
A greater amount of coils will result in a stronger magnetic held.
Increasing voltage will result in a stronger magnetic force.
The magnetic field increases as the length of the wire increases.
Which of the following is a true statement about the magnetic field between two magnets?
The south pole of one magnet is attracted to the south pole of the other magnet.
The south pole of one magnet is attracted to the north pole of the other magnet.
The north pole of one magnet is attracted to the north pole of the other magnet.
The south pole of one magnet is attracted to both poles of the other magnet.
Which change will most likely increase the strength of a magnetic field produced by an electromagnet?
Reduce the number of turns of the coil the nail in a homemade electromagnet using a nail)
Add a battery
Remove the iron nail
Switch the direction in which the battery is connected
Both light bulbs are lit in the circuit above. In order to turn off both lights, a switch must be installed in the circuit at the place marked -
1
2
3
4
Electricity is transferred in an electric circuit through
Moving protons
Moving neutrons
Static electrons
Moving electrons
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