WorksheetsCircuits
Total questions: 15
Worksheet time: 11mins
What component allows current to flow in only one direction?
Resistor
Capacitor
Diode
Transistor
What happens if you do not use a resistor with an LED?
The LED will grow brighter
The LED will not light up
The LED could burn out from too much current
The LED will last longer
Where would you use a capacitor?
To store electrical charge temporarily
To control the direction of current
To limit current in LED
To switch between two circuits
What symbol is this?
(a)
If a resistor has a resistance of 4Ω and a current of 2A flows through it, what is the voltage across it?
(a)
What are the 3 basic components needed to make a circuit?
Resistor, transitor, and capacitor
Battery, motor, and lamp
Power source, load, and connecting wires
Switch, diode, and fuse
Converts electrical energy into heat and light
(a)
What happens to the current in a series circuit if one components stops working?
It flows through other paths
It increases
It stops
It becomes zero but starts again after a delay
How does the increasing resistance affect the current in a circuit, assuming the voltage is constant?
Increases the current
Decreases the current
Has no effect on the current
Doubles the current
What is the formula of Ohm's Law?
(a)
If a device uses a 10A of current and is powered by 230V, how much power does it consume?
2,300W
22W
1,150W
2.6W
Allows circuit to be opened or closed
(a)
Converts electrical energy into movement energy
(a)
Why do household appliances use parallel circuits instead of series circuits?
To reduce power consumption
So each appliance works independently
To increase the voltage in the system
To make the circuit easier to repair
What is the formula for electrical power?
(a)
