Required practical - Investigating resistance (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What are the two main things investigated in this practical?
What are the two main things investigated in this practical?
Series/parallel & wire length resistance
In a series circuit, how is the potential difference distributed?
In a series circuit, how is the potential difference distributed?
Split between the resistors
In a parallel circuit, what potential difference does each resistor get?
In a parallel circuit, what potential difference does each resistor get?
Same as the power supply
Which equation is used to calculate resistance?
Which equation is used to calculate resistance?
Calculate resistance when potential difference is 6.0 V and current is 0.5 A.
Calculate resistance when potential difference is 6.0 V and current is 0.5 A.
Why is a variable resistor used in the wire length investigation?
Why is a variable resistor used in the wire length investigation?
To keep current constant
What is used to change the length of wire in the circuit?
What is used to change the length of wire in the circuit?
Crocodile clips
How does total resistance compare in series versus parallel circuits?
How does total resistance compare in series versus parallel circuits?
Higher in series, lower in parallel
What is the relationship between wire length and resistance?
What is the relationship between wire length and resistance?
Directly proportional
If you double the wire length, what happens to the resistance?
If you double the wire length, what happens to the resistance?
It doubles
What should the graph of wire length against resistance show?
What should the graph of wire length against resistance show?
A straight line through the origin
Why should you take at least two readings for each wire length?
Why should you take at least two readings for each wire length?
To make results more reliable