WorksheetsCurrent Electricity Review
Total questions: 56
Worksheet time: 9hrs 52mins
What happens to the brightness of the light bulbs in a series circuit when you add more lights?
Each bulb gets dimmer.
Each bulb remains the same.
Half of the bulbs get dimmer.
Each bulb gets brighter.
What is the purpose of a switch?
To open and close the circuit.
To carry the electricity through the circuit.
To make a fun clicking sound.
To supply the power to the circuit.
What is electric current?
A build up of electrons.
The difference in charge between 2 points.
The flow of electrons through a circuit.
The opposition to flow of electrons.
What is a load?
A device that converts mechanical energy into electrical energy.
A device that turns stored chemical energy into electrical energy.
A device that uses electrical energy.
A device that converts static electricity into mechanical energy.
What is an electric cell?
A device that converts mechanical energy into electrical energy.
A device that turns stored chemical energy into electrical energy.
A device that uses electrical energy.
A device that converts static electricity into mechanical energy.
What is a primary cell?
A single-use source for electrical charge.
A re-usable source for electrical charge.
A device to change sunlight into electrical charge.
A single-use source for sunlight to power flashlights.
What is a wet cell battery?
One that uses water to make electricity.
One that uses a liquid electrolyte solution.
One that uses a powdered electrolyte solution.
What is a dry cell battery?
One that uses water to make electricity.
One that uses a liquid electrolyte solution.
One that uses a paste electrolyte.
What is the voltage of a 60 ohm, 2 amp device?
30
0.033
10.95
120
Is the circuit for THIS lightbulb closed or open?
Closed
Open
Is this switch closed or open?
Closed
Open
What electrical symbol is this?
Battery
Cell
Switch
Motor
Which of the following is NOT required to build a simple circuit?
Load
Power Source
Conductor
Switch
From which terminal (side) of the battery do electrons flow?
Positive
Negative
This type of circuit connects objects to cells separately so there are multiple paths for electricity to flow.
series circuit
parallel circuit
Without a load, too much electricity is flowing through a circuit. The wires heat up and can start a fire. This is called a:
short circuit
parallel circuit
series circuit
terminals
This is a switch that protects circuits from dangerously high currents. The switch will push open to create and open circuit if the current gets too high.
fuse
filament
circuit breaker
amperes
The mathematical relationship among Voltage, Current, and Resistance is called:
Faraday's Law
Tesla's Law
Edison's Law
Ohm's Law
(I X R)
Voltage divided by Resistance
(V / R)
Current
Power
Ohms
Watts
Voltage divided by Current
(V / I)
Current
Power
Resistance
Watts
If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?
2.1 Amps
2.4 Amps
1.71 Amps
15 Amps
The current is the same throughout this type of circuit
series
parallel
This type of circuit has the current travelling through branches.
series
parallel
The following type of circuit has the same voltage throughout the entire circuit.
series
parallel
If the voltage across the battery was 10V in this diagram, what would be the voltage across each light bulb?
10V
5V
20V
0V
This image represents what type of circuit?
open
circular
series
parallel
A circuit with 3 resistors, 10 Ohms, 30 Ohms and 20 Ohms are in series. What is the total resistance
30 Ohms
50 Ohms
60 Ohms
100 Ohms
What is the current of a series circuit with values of 5, 9, 17 ohms, with a battery of 12V
0.3871
3870.0
372.0
4.4395
If a series circuit of three bulbs is rearranged into a parallel circuit, what will happen to the brightness of three bulbs
The bulbs will turn off due to an incomplete supply of electricity.
All three bulbs will have the same amount of luminosity once rearranged into a parallel circuit but will be dimmer than in parallel.
All three bulbs will have the same amount of luminosity once rearranged into a parallel circuit but will be brighter than in parallel.
The bulb next to the battery will be brightest and each bulb will be dimmer than the one before.
12 Volt battery with two resistors in series 3 Ohms & 4 Ohms what would the total current draw be
2.1
1.71 Amps
2.4 Amps
15 Amps
DC current is found in _______, which means the current flows in ________ direction
Batteries, one
Wall outlet, one
Batteries, both
Wall outlet, both
I T = 3
RT = 14
I T = 0.64
RT = 14
I T = 6.3
RT = 1.4
I T = 0.64
RT = 1.4
A circuit has a maximum current draw of 18A. Which 2 devices could be safely run?
Coffee Maker
Clothes Iron
Refrigerator
Dishwasher
Determine the efficiency of a device that uses 840W to operate, but takes in 980W.
17%
84%
117%
86%
Determine the energy, in kWh, of an oven with a power rating of 3.2kW, running for 4 hours.
3.2kWh
6.4kWh
12.8kWh
4kWh
Determine the cost of running an appliance with that uses 167kWh if the cost of electricity is $0.14/kWh
$0.14
$23.38
$167
$2338
An appliance has a power rating of 43kW. If that appliance is run for 132 hours, and the price of electricity is $0.12/kWh, determine the cost of running this device.
$681.12
$5.16
$15.84
$47300.00
