Resistors (AQA GCSE Design and Technology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is Ohm's law?
What is Ohm's law?
V = I × R
In which unit is voltage measured?
In which unit is voltage measured?
Volts (V)
What is the primary job of resistors in circuits?
What is the primary job of resistors in circuits?
Controlling current flow
Where would you commonly find variable resistors in use?
Where would you commonly find variable resistors in use?
Volume controls and dimmer switches
How does an LDR's resistance change in darkness?
How does an LDR's resistance change in darkness?
Resistance increases dramatically
What happens to most thermistors as temperature rises?
What happens to most thermistors as temperature rises?
Resistance decreases
What does the basic resistor symbol look like?
What does the basic resistor symbol look like?
A zigzag line
What number does the colour orange represent in resistor colour coding?
What number does the colour orange represent in resistor colour coding?
3
What do the first two colour bands on a resistor indicate?
What do the first two colour bands on a resistor indicate?
Significant digits of resistance
What does the third colour band represent on a four-band resistor?
What does the third colour band represent on a four-band resistor?
Multiplier (zeros to add)
What tolerance does a gold fourth band indicate?
What tolerance does a gold fourth band indicate?
±5% accuracy
If a circuit needs to drop 6V with 0.02A current, what resistance is required?
If a circuit needs to drop 6V with 0.02A current, what resistance is required?
300Ω