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WorksheetsElectric circuits
Total questions: 25
Worksheet time: 18mins
A circuit...(複選題 答案有三個）
a closed system of wires that electricity can flow
commons part are battery, wires, switch, and light bulb
Every electricity appliances have multiple circuits
Electric current doesn’t flow in the circuit
A battery can be a ______________ in an electric circuit.
energy source
load
switch
electrical appliances
If a circuit is OPEN...
the circuit is complete and the light will work.
the circuit is broken and the light will NOT work
What can create a complete circuit?
wire, light bulb, energy source, switch
inside wire, switch, outside wire, electricity
wire, switch, battery, gap
What are the three parts must needed for a complete circuit?
light bulb, battery, wire
wire, switch, battery
energy source, copper wire, cable(電線電纜）
A complete, unbroken path that allows electricity to flow is called a ___________ circuit.
open
closed
parallel
conductor
What type of circuit is this?
parallel circuit
stinky circuit
open circuit
closed circuit
open
closed
closed
Will the light bulb light in this circuit?
Yes
The switch works when it’s open!
No
The switch doesn’t work when it’s open!
Is a plastic fork an insulator or conductor?
insulator
conductor
Is a paperclip an insulator or a conductor?
insulator
conductor
Which of the following is an insulator?
nail
screw（螺絲）
cardboard
copper wire
Porcelain （瓷器）
Which of the following is a conductor?
Ice cream stick
Glass cup
Silver ring
Eraser(rubber)
Iron key
If a circuit is OPEN...
the circuit is complete and the light will work.
the circuit is broken and the light will NOT work
the circuit is a series circuit
Closed Circuit
Free Circuit
Open Circuit
Expensive Circuit
A material that allows electricity to move easily
Flammable
Insulator
Contract
Conductor
A forth grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?
plastic straw
cotton blankets
aluminum foil
rubber eraser
Which of these materials conducts electricity the best?
wood
brick
copper
plastic
Hair
To have a complete electric circuit, the path must be _____, the switch must be_____.
open, off
closed, on
Strong, off
open, on
What is the purpose （目的）of a switch in an electric circuit?
o increase power to the light bulb
to allow the circuit to be opened or closed
to change the direction of the current
to waste energy
Teacher Vicky made a circuit with four parts, a battery, a wire, a switch, and a bulb. What would happen if we removed the battery?
The current would not flow.
The bulb would glow less brightly
The switch will turn off
who is sad bee
Jin
Rong
Xuan
Teacher vicky
U
