WorksheetsElectrical Power and Circuits
Total questions: 24
Worksheet time: 14mins
A material in which electrons are able to move easily is called
Insulators
Conductors
Electromagnet
Resistor
Which on the following is NOT an example of an insulator.
Rubber
Glass
Carbon
Wood
A closed path that electric current flows is a
circuit
voltage
current
resistance
Which way do current in the circuit flow?
Positive terminal of the battery to negative terminal
Negative terminal of the battery to positive terminal
What does a resistor do?
Reduces the flow of resistance
Reduce the flow of the current
Increase flow of electrons
Enhance the flow of the voltage
Where do electrons gain their energy from?
Cell
Wire
Light bulb
Switch
What is the unit of measurement for current
Ohm
Amperes
Volts
In a parallel circuit with 3 lightbulbs, if you take out one lightbulb what will happen to the rest?
They will all go out.
One will stay on
The other two will stay on
What kind of circuit does the picture show?
Closed Series Circuit
Closed Parallel Circuit
Open Series Circuit
Open Parallel Circuit
What is the unit of measurement for resistance?
Amperes
Ohm
Volts
In a series circuit what happens when you add another bulb?
The bulbs gets brighter
The bulbs gets dimmer
Nothing changes
Voltage is the ability of batteries to drive current
True
False
In a parallel circuit
voltage across each component is the same
voltage across the circuit is the sum of the voltages across each component
current through each of the components is the same
total current is the sum of currents through each component
What is used to measure the current in a circuit?
Volts
Voltmeter
Ammeter
Ampere
Which of the following is incorrect about the component in the figure
Electronic component made of two pieces of metal, joined by a semiconductor
Material with just a few electrons that can move freely
When exposed to light energy, more electrons are released
More electron flow causes resistance to increase
Which lamp will light up brighter?
Assume that the loads are 3 lamps, which circuit will have dimmer lamps?
In a series circuit
voltage across each component is the same
voltage across the circuit is the sum of the voltages across each component
current through each of the components is the same
total current is the sum of currents through each component
