A student measures the resistance of a length of wire. The diagram shows the correct circuit.
RAV
.1
How is the voltmeter connected to the wire R?
[1 mark]
.2
The voltmeter reads 3.0 V. The ammeter reads 150 mA.
Calculate the resistance of the wire.
[3 marks]
.3
The student switches the circuit off between readings. Suggest why.
[2 marks]
5 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
A student hangs weights on a spring and measures its length each time.
Spring results. Weight added in newtons and total length in centimetres: 0 N, 20.0 cm; 1.0 N, 22.5 cm; 2.0 N, 25.0 cm; 3.0 N, 28.5 cm; 4.0 N, 30.0 cm; 5.0 N, 32.5 cm.
Weight added (N)
Length of spring (cm)
0
20.0
1.0
22.5
2.0
25.0
3.0
28.5
4.0
30.0
5.0
32.5
.1
Calculate the extension of the spring when the weight is 4.0 N.
[1 mark]
.2
Identify the anomalous result. Give the weight.
[1 mark]
.3
Use the other results to calculate the spring constant in N/m.
[2 marks]
.4
Suggest one way the student could make the length readings more accurate.
[1 mark]
4 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
A box is dragged across a rough floor with a constant force of 150 N. 4500 J of work is done.
.1
Calculate the distance the box moves.
[2 marks]
.2
The bottom of the box and the floor get slightly warmer. Explain why.
[2 marks]
6 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
Scientists' model of the atom has changed as new evidence was found.
Describe how the model of the atom developed from the plum pudding model to the model we use today, and the evidence for the changes.
[6 marks]
5 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
The graph shows how the distance travelled by a cyclist changes with time.
05101520253020406080100Time (s)Distance (m)
.1
Determine the speed of the cyclist during the first 10 s.
[2 marks]
.2
Describe the motion of the cyclist between 10 s and 20 s.
[1 mark]
.3
Calculate the average speed of the cyclist for the whole 30 s.
