Worksheets10.2 Electrical Circuits
Total questions: 20
Worksheet time: 10mins
What is an electric circuit?
A single wire with no components
An open loop of wire
A closed loop of wire connecting electrical components
A loop of wire with only one component
What is the SI unit for electric charge?
Ohm
Volt
Ampere
Coulomb
What particle carries electric charge in a wire?
Electrons
Ions
Neutrons
Protons
What is the charge of an electron?
1.60×10−19 coulombs
-1.60×10−19 coulombs
3×10−26 kg
1 coulomb
What is the flow of electric charge called?
Current
Voltage
Power
Resistance
What is the SI unit for current?
Ampere
Volt
Coulomb
Ohm
What is the role of a battery in a circuit?
To stop the flow of electrons
To decrease the voltage
To act as an insulator
To pump electrons to a high voltage
What is the term for materials that do not allow electricity to flow through them?
Insulators
Resistors
Semiconductors
Conductors
What is the term for materials that have properties between conductors and insulators?
Semiconductors
Conductors
Insulators
Superconductors
What is electrical resistance?
The flow of electric charge
The opposition to the flow of electric charge
The potential energy of electric charge
The speed of electric charge
In which direction do electrons actually flow in a circuit?
They do not flow
From positive to negative
In a circular motion
From negative to positive
What is the conventional direction of current flow?
From positive to negative
From negative to positive
In a circular motion
It does not flow
What is the visual symbol for a battery in a circuit diagram?
A circle
Two parallel lines of different lengths
A zigzag line
A straight line
What is the electrical analog of pressure in a circuit?
Current
Resistance
Voltage
Power
What is a resistor?
A device that decreases voltage
A device that opposes current flow
A device that increases current
A device that stores charge
Which material is known for having very low electrical resistance?
Gold
Plastic
Aluminum
Pure copper
What is the function of semiconductors in circuits?
To allow electron flow without resistance
To increase voltage
To offer appreciable resistance to electron flow
To completely block electron flow
What happens to the voltage as it travels around a circuit?
It fluctuates randomly
It remains constant
It increases
It decreases
What is the simplest possible electrical circuit composed of?
A battery, a wire, and a resistor
A battery and a lightbulb
A wire and a switch
A motor and a generator
What must happen to the voltage after a trip around the circuit?
It must return to its initial value
It must be halved
It must decrease
It must increase
