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32 questions
A student constructs the circuit shown for a science demonstration. With the switches in these positions, which lights are on?
All the lights
Lights 1 and 2 only
Lights 3 and 4 only
None of the lights
A student wants to build a circuit with four lightbulbs and one bell. The student wants to place a switch in the circuit so that only one light will still be on and the bell will still ring when the switch is opened. Which of these circuits should the student build?
______________ allows electricity to flow through it.
a conductor
an insulator
a magnet
________________ stops the flow of electricity.
A conductor
An insulator
A magnet
A group of students is building the circuit represented in the diagram. What object can be used at Position X for the buzzer to sound when Switch K is closed?
A power source
An insulated wire
Another switch
Another bulb
To complete a circuit the switch must be-
unattached
open
closed
A complete electrical path works with only a wire and a bulb.
True
False
To make a circuit complete you must have a-
complete path
switch
bulb
When the switch is closed the light-
turns on
stays off
burns out
The plastic around the wire is-
a conductor
an insulator
Which item uses electricity to make heat?
radio
toaster
fan
speaker
The circuit pictured does not work. Which procedure would most likely allow the bulbs to light?
Open the switch and then connect the two wires that are attached to the wood block
Switch the positions of the two wires that are connected to the battery and then open the switch
Move the switch closer in the circuit to the battery
Connect the two wires that are attached to the wood block
If the lights are on, the circuit is-
open
closed
A battery has two charged ends, which are-
both positive
both negative
one of each, one positive and one negative
If the lights are off, the circuit is-
open
closed
In a parallel circuit, the current-
makes one circle
stays in one path
spilts and goes through multiple (2 or more) components
In a series circuit, if one bulb goes out-
they all go out
the rest stay lit
half stay lit and half go out
A switch is necessary to make a circuit complete
True
False
In a parallel circuit, if one bulb goes out-
they all go out
the rest stay lit
half stay lit and half go out
The wire is-
an insulator
a conductor
a magnet
Two types of circuits-
parallel and magnetic
electromagnetic and series
series and parallel
A student builds a circuit allowing the lightbulbs to light, the buzzers to make sound, and the motors to turn. Which two switches can be open and still allow all of the parts to work?
Switches 1 and 3
Switches 1 and 4
Switches 2 and 3
Switches 3 and 4
Students constructed a circuit using different-colored light bulbs. What will happen if Switch 3 is closed and the other switches are left open?
Only the white bulb will operate.
None of the bulbs will operate
Only the red and blue bulbs will operate.
Only the white and yellow bulbs will operate.
The flow of electricity requires a-
complete path
incomplete path
insulated current
A complete circuit can (but doesn't necessarily have to) include a-
wood block
bulb, switch, and buzzer
rubber band
All the lightbulbs in this circuit are lit. Which change would cause all the bulbs to go out?
Removing Wire 1
Removing Wires 2 & 4
Removing Wires 2 & 5
Removing Wires 3 & 4
Which circuit shown will produce light when the switch is closed?
The energy being used is __________ and it is producing _______ energy.
Electrical energy to sound energy.
Electrical energy to mechanical energy.
Electrical energy to Light energy.
Electrical energy to light and thermal energy.
What is wrong with this circuit?
There is no light bulb
The wire is cut
There is no battery
The wire is not connected to the battery
The circuits below are an example of ...
Series circuits
Simple circuits
Parallel circuits
Insulated circuits
Why do electricians wear gloves made of rubber?
It is soft.
It is waterproof.
It is an insulator.
It is inexpensive.
Why is a switch used in a circuit?
To complete or break a circuit
To save energy
To prevent electric shocks
To make the bulb glow easily
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