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WorksheetsP2. Electricity
Total questions: 20
Worksheet time: 10mins
Identify the circuit symbol
Resistor
Fuse
Thermistor
Lamp
Identify the circuit symbol
Diode
Light Emitting Diode (LED)
Light Dependent Resistor (LDR)
Ammeter
Identify the circuit symbol
Light Dependent resistor
Variable Resistor
Thermistor
Resistor
Identify the circuit symbol
Battery
Power Pack
Ammeter
Lamp
Identify the circuit symbol
Thermistor
Light Dependent Resistor
Variable Resistor
Resistor
Two identical bulbs are wired in series with each other, shortly after turning the circuit on, one bulb blows. What happens to the other bulb?
It gets brighter
It gets dimmer
It goes out
Three identical bulbs are wired in series with each other. The resistance of the whole circuit is 60Ω. What is the resistance of 1 bulb
10Ω
20Ω
60Ω
A student wants to experiment with this circuit and decides to put an ammeter in. Which of these is correct
It does not matter where it goes so long as it is parallel
It does not matter where it goes so long as it is in series
It must go between two bulbs
It must go between the power supply and the bulbs
Wired correctly the ammeter reads 0.25A. Assuming the three bulbs still have a combined resistance of 60Ω, calculate the potential difference across all 3 bulbs.
15V
60.25V
59.75
240V
The three lamps are rewired parallel to each other, compare the brightness of these lamps from when they were in series. The power supply has stayed the same.
They are now brighter
They are now dimmer
It is impossible to say
The resistance of each lamp is the 20Ω, and the power supply is turned to 6V. Calculate the current through the first lamp.
26A
0.3
14A
3.333A
Which of these will not increase the resistance of a length of wire
Using a shorter wire
Using a different colour lamp
Using a longer wire
Using a thicker wire
A student draw up their results. What is the relationship between length of wire and resistance of wire
There is no relationship
Directly proportional
Inversely proportional
In a three core wire, what wire is the BROWN wire
Live
Earth
Neutral
What will happen if you replace a fuse with one a current rating too low for the appliance
Nothing, perfectly safe.
The fuse will never melt
The fuse will melt even when things are working normally
What will happen if you replace a fuse with one rated too high for the appliance
Nothing, perfectly safe
The appliance will draw a lower current so it will work.
The fuse will not melt, even if the current is too high.
What is the function of the EARTH wire.
Touches the metal casing to ground it in case there is a fault
Decoration, electricians love yellow and green
Carries current toward the appliance
Carries current away from the appliance.
Which of these is a correct IV graph for a diode
The potential difference across a resistor is 6V, and the current through the circuit is 0.2A. What is the resistance of the resistor?
12Ω
0.03Ω
15Ω
30Ω
Calculate the power of a lamp which draws a current of 0.25A and a potential difference of 12V.
3W
4W
48W
24W
