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10 questions
It provides electrical energy.
bulb
electrical wires
battery
table
It is used to connect the components of an electrical circuit they usually made of metal.
light bulbs
electrical wires
battery
electrical tape
Electrical appliances such as computers, television sets and refrigerators need ______ to work.
electricity
air
water
wind
It gives off light and heat when electricity flows through it.
battery
electrical wires
switch
light bulb
It allows heat and electricity to pass through
conductor
insulator
gas
vacuum
It does not allow heat and electricity to pass through
conductor
gas
insulator
vacuum
Which of the following is a good conductor of heat?
wood
metal
water
plastic
Which of the following is a good example of insulator that does not allow heat to pass through?
rubber
metal
aluminum
copper
Which of the following materials is a component of simple circuit?
light bulb
pencil
scisscors
electrical tape
which of the following are good example of insulator?
plastic and rubber
wood
clothe
glass
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