CourseCourseConceptConceptDocsDocuments

CAIE A-Level Physics AS 10.1 Practical Circuits Questions

Practise reading circuit symbols and diagrams, distinguishing e.m.f. from terminal p.d. and analysing internal resistance, lost volts and load changes.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • identify and draw practical circuit symbols and interpret complete circuit diagrams
  • define e.m.f. and distinguish it from p.d. through energy transfer per unit charge
  • analyse internal resistance, lost volts and terminal p.d. as load current or resistance changes

Covered syllabus points

10.1.1—The circuit symbols shown in section 6 of this syllabus10.1.2—Draw and interpret circuit diagrams containing the circuit symbols shown in10.1.3—The electromotive force (e.m.f.) of a source as energy transferred per unit10.1.4—E.m.f. and potential difference (p.d.) in terms of energy considerations10.1.5—The effects of the internal resistance of a source of e.m.f. on the terminal

Question 1

[Maximum number: 1]

Which circuit symbol represents a microphone?

A
Figure for Question 1 — CAIE A-Level Physics AS — Option A
B
Figure for Question 1 — CAIE A-Level Physics AS — Option B
C
Figure for Question 1 — CAIE A-Level Physics AS — Option C
D
Figure for Question 1 — CAIE A-Level Physics AS — Option D

Question 2

[Maximum number: 2]

A student uses a circuit containing an ammeter, a voltmeter and a cell to take measurements to determine the resistance of a length of nichrome wire.

Draw a circuit diagram to show how the components should be connected. Use the symbol for a resistor to represent the nichrome wire.

Question 3

[Maximum number: 5]

Question (a)

(a)

A battery of electromotive force (e.m.f.) 6.0 V and internal resistance r is connected to a resistor of resistance 12Ω12 \Omega and a variable resistor X, as shown in Fig. 6.2.

Fig. 6.2

Fig. 6.2

[ 5 ]

Question (i)

(i)

By considering energy, explain why the potential difference across the battery's terminals is less than the e.m.f. of the battery.

[ 2 ]

Question (ii)

(ii)

A charge of 2.5 kC passes through the battery.

Calculate
1. the total energy transformed by the battery,
energy = J
2. the number of electrons that pass through the battery.
number =

[ 3 ]
All question bank results loaded