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100
Which of the following shows the parts of a circuit in the correct order? A. load, connector, switch, power source B. power source, connector, switch, load C. switch, power source, connector, load D. connector, load, power source, switch
B. power source, connector, switch, load
100
What are the potential dangers of using unsafe procedures with electricity? What are some practices to avoid?
The dangers of unsafe use of electricity include electric shock, burns, or electrical fires. Examples of unsafe practices include putting too many electrical devices on one circuit, and using frayed wires.
100
The strength of a power source that is measured in volts is called
voltage.
200
The burner on a stove heats up when it receives electric current because it is high in A. conductance B. insulation C. resistance D. voltage
C. resistance
200
The electricity that people use relies on a _________ of electrical charges.
current
200
A _______________ is a circuit in which the electric current follows more than one path.
parallel circuit
200
A _________________ can stop the rest of the circuit from operating properly and can be dangerous.
short circuit
300
Which of these allowed current to flow? A. total circuit B. closed circuit C. short circuit D. open circuit
B. closed circuit
300
A flow of electrical charges is known as an _______________.
electric current
300
If any part of a parallel circuit is removed or broken, the current __________ to flow.
continues
300
The __________ of a parallel circuit divide the electric current between them
branches
400
Which of the following provides the most power? Battery A - 1.5 volts Battery B - 9 volts Battery C - 15 volts Battery D - 20 volts
Battery D - 20 volts
400
Electric currents keep _________ moving.
charges
400
Do you think the material inside a light bulb is a conductor or has resistance? Why?
The material inside a light bulb probably has resistance. As a result, the electric current does not keep flowing through it but instead the energy is changed into light and heat.
400
In a series circuit, all the electrical charges flow in ______________________________.
the same direction.
500
You have a string of holiday lights with one bulb missing. What will happen when you plug the lights in? Why?
If the lights are in a parallel circuit, they will all light up anyway. If they are in a series circuit, they will not light because the lack of a bulb will open the circuit and block the flow of current.
500
All electrical charges flow in the same direction and along the same path in a _______________.
series circuit
500
A ___________ opens and closes a circuit.
switch
500
An electric circuit begins at a ________________.
power source.