Resistors (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What goes on the y-axis of an I-V graph?
What goes on the y-axis of an I-V graph?
Current
What shape is the I-V graph for a fixed resistor?
What shape is the I-V graph for a fixed resistor?
Straight line through origin
Why does a filament lamp's resistance increase as current flows?
Why does a filament lamp's resistance increase as current flows?
The filament gets hotter and vibrates more
In which direction does a diode allow current to flow?
In which direction does a diode allow current to flow?
Forward direction only
What is the typical threshold voltage for a silicon diode?
What is the typical threshold voltage for a silicon diode?
Which component is used to change the potential difference when collecting I-V data?
Which component is used to change the potential difference when collecting I-V data?
Variable resistor
What does a steeper gradient on an I-V graph indicate?
What does a steeper gradient on an I-V graph indicate?
Lower resistance
Which component produces a curved I-V line that gets less steep?
Which component produces a curved I-V line that gets less steep?
Filament lamp
What does a flat then straight line on an I-V graph indicate?
What does a flat then straight line on an I-V graph indicate?
A diode
What is the formula for finding resistance from an I-V graph?
What is the formula for finding resistance from an I-V graph?
Why can you reverse the cell when creating an I-V graph?
Why can you reverse the cell when creating an I-V graph?
To get negative values for a complete graph
What type of relationship does a fixed resistor show on an I-V graph?
What type of relationship does a fixed resistor show on an I-V graph?
Linear