May/June 2026 Paper 63

2026 · 4 questions · 23 parts · 40 marks

0/40 marks

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1(a)(i)1(a)(ii)1(a)(iii)1(a)(iv)1(a)(v)1(b)(i)1(b)(ii)1(b)(iii)1(c)

–/11 mks

2(a)(i)2(a)(ii)2(b)(i)2(b)(ii)2(b)(iii)2(c)

–/11 mks

3(a)3(b)3(c)(i)3(c)(ii)3(c)(iii)3(c)(iv)3(d)

–/11 mks

–/7 mks

Context for question 3

A student investigates an electric circuit containing different combinations of resistors.

3(a)Easy2 marks

On Figure 3.1, complete the circuit to show:

a voltmeter connected to measure the potential difference (p.d.) across the resistor
an ammeter connected to measure the current in the circuit.

Draw with the mouse or a finger.

3(b)Easy1 mark

The student measures the p.d. V across the resistor and the current I in the circuit. The ammeter reading is shown in Figure 3.2. Record, in Table 3.1, the value of I shown on the ammeter in Figure 3.2.

Figure 3.2, an ammeter with a scale from 0 to 1.5 A and a needle to be read

Context for 3(c)

The student connects resistors, one at a time, in parallel with the resistor in the circuit in Figure 3.1 until there are five resistors in parallel. The student:

measures the p.d. $V$ across the resistors in parallel
measures the current $I$ in the circuit for each combination of resistors
calculates the resistance $R$ of each combination of resistors.

The student’s readings are shown in Table 3.1.

Table 3.1

number of resistors	$V$ /	$I$ /	$R$ /
1	0.75
2	0.75	0.60	1.25
3	0.75	0.85	0.88
4	0.75	1.15	0.65
5	0.75	1.45	0.52

3(c)(i)Easy1 mark

Complete the column headings in Table 3.1.

3(c)(ii)Easy1 mark

Calculate the value of the resistance

R

when there is one resistor in the circuit. Use the equation:

R = \frac{V}{I}

Record your value in Table 3.1.

3(c)(iii)Medium2 marks

Describe the relationship between the number of resistors in the circuit and the resistance

R

in the circuit. Justify your answer using values from Table 3.1.

Your answer

3(c)(iv)Medium2 marks

The resistors heat up during the investigation and this affects the values for the resistance

R

. Suggest two improvements to reduce this heating effect.

Your answer

3(d)Medium2 marks

The student takes repeat readings. Table 3.2 shows the ammeter readings for three resistors in parallel.

Table 3.2

0.85	0.58	0.90	0.80

Identify the anomalous reading. Suggest one reason for this anomaly.

anomalous reading

suggestion