Required practical - Investigating resistance (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What formula is used to calculate resistance from potential difference and current?
What formula is used to calculate resistance from potential difference and current?
A wire has PD of 2.4 V and current of 0.3 A. What is its resistance?
A wire has PD of 2.4 V and current of 0.3 A. What is its resistance?
8.0 Ω
How does potential difference behave across resistors in a series circuit?
How does potential difference behave across resistors in a series circuit?
It splits across the resistors
What PD does each resistor get in a parallel circuit?
What PD does each resistor get in a parallel circuit?
Same as the power supply
What is the total resistance formula for resistors in series?
What is the total resistance formula for resistors in series?
How does total resistance in parallel compare to individual resistors?
How does total resistance in parallel compare to individual resistors?
Lower than the smallest resistor
What is the relationship between wire length and resistance?
What is the relationship between wire length and resistance?
Directly proportional
If a wire's length doubles, what happens to its resistance?
If a wire's length doubles, what happens to its resistance?
Doubles
What graph shape shows resistance vs length for a wire?
What graph shape shows resistance vs length for a wire?
Straight line through origin
Why keep the circuit switched off between measurements of wire resistance?
Why keep the circuit switched off between measurements of wire resistance?
Prevent wire heating up
Which instrument measures current in the circuit?
Which instrument measures current in the circuit?
Ammeter
Do series or parallel circuits have higher total resistance?
Do series or parallel circuits have higher total resistance?
Series circuits