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WorksheetsSNC1D Electricity Test
Total questions: 46
Worksheet time: 3600secs
Which of these is caused by static electricity?
A magnet attracts a paper clip
Glue holds two pieces of paper together
Socks taken from a clothes dryer stick together
Ice sticks to a car’s windshield
The shock you sometimes feel when you touch a metal doorknob on a dry day is electric ________.
Circuit
Current
Discharge
Resistance
Which choice describes the behavior of an electric charge?
Like charges attract. Unlike charges repel.
Like charges repel. Unlike charges attract.
Like charges attract. Unlike charges attract.
Like charges repel. Unlike charges repel.
An example of a conductor is:
Steel
Wool
Plastic
Fabric
Positive charges are fixed (do not move).
True
False
Neither true nor false.
What is the end result of charging by contact?
Both object have the same charge, so they will attract one another
Both object have the same charge, so they will repel one another
Both object have the opposite charge, so they will attract one another
Both object have the opposite charge, so they will repel one another
Use the electrostatic series attached to answer the following:
When a ruber baloon rubbed on human hair, the baloon will become
Positive
Negative
The same charge as the hair
Neutral
A thin strip of metal foil has a negative electric charge. You bring a balloon that also has a negative charge near the foil. What will MOST LIKELY happen?
The foil will bend toward the balloon
The foil will bend away from the balloon
The balloon will cause the foil to have a positive charge
The foil will cause the balloon to have a positive charge
Which device or devices could be removed without breaking the electric circuit?
Only the bulb
Only the switch
The battery and the switch
The bulb and the switch
An electric circuit contains a battery, a switch, and a bulb. Which of the following will MOST LIKELY happen if you add another battery to the circuit?
The bulb will not shine
The bulb will shine brighter than it did with one battery
The bulb will shine the same
The bulb will shine half as bright as it did with one battery
Mahra finds that all of the electric cords in her school are covered with plastic. Why is it important to cover the electric cords with plastic?
Plastic is an insulator.
Plastic is a conductor.
Plastic is strong.
Plastic will melt.
What is the purpose of a fuse?
to break the circuit and turn the power off if there is too much power being run
to add more power to the circuit
to be a conductor
to be an insulator
What is a circuit breaker?
A type of light switch.
A switch used in an electrical appliance that uses large current.
Used to turn on or off the electrical supply to the whole house.
Used to switch off the electrical supply to one part of the circuit when current in that part of the circuit is too large.
A vacuum cleaner has a power rating of 0.8 kW.
Calculate how much it costs to use a vacuum cleaner for 2 hours every day, for 30 days.
Assume that electricity cost $0.25 per kWh.
$12
$15
$24
What is the function of a turbine?
When it spins, it makes sparks, inducting electricity.
It transfers the energy from the flow of steam or water to the generator.
It speeds up the steam or water to keep it at a steady pace.
It controls the steam or water so it can be pumped around in a cycle.
Which one of these is nonrenewable?
coal
wind
water
geothermal
An electric car is NOT "green" if the electricity to charge it comes from__________________.
solar cells
wind power
burning coal
water power
The electricity generated from a power plant is
Alternating Current
Direct Current
Delayed Current
Alternating Voltage
A non-renewable energy source...
Can eventually run out
Can be used indefinitely
Is not common in Canada
Must be human-made
An electric motor draws 150 amperes of current while operating at 240 volts. How much power is being used by the motor? (show your work - use / for division symbol and X for multiplication)
A power saw at the local hardware store boasts of having a 15-Amp motor. Determine its resistance when plugged into a 110-Volt outlet. (show your work - use / for division symbol and X for multiplication)
A coffee cup immersion heater utilizes a heating coil with a resistance of 8.5 Ω. Determine the current through the coil when operated at 110 V. (show your work - use / for division symbol and X for multiplication)
An incandescent light bulb creates 0.06Kwh of energy. Only 0.006Kwh of that is actually used for light. The rest goes to heat. Find the percent efficiency for the light bulb.
