⚡ Chapter 16: Electricity – Multiple Choice Questions
Prepared by Muhammad Tayyab, Subject Specialist Physics, Govt Christian High School Daska. Based on PECTAA 2026 syllabus (National Curriculum 2023).
📖 What's Inside: This chapter covers conventional current, direct current, ammeter, electromotive force, Ohm's law, and temperature effect on resistance. Each MCQ is presented with the correct answer and detailed explanation as per the official PECTAA 2026 Physics curriculum. Perfect for Punjab Boards (Lahore, Gujranwala, Multan, etc.) and all BISE boards across Pakistan.
📚 Related Resources – Chapter 16: Electricity
Electricity covers electric current, Ohm's law, resistance, series and parallel circuits, electric power, energy, and household wiring. Includes solved examples and numerical problems.
📖 Multiple Choice Questions (PECTAA 2026)
16.1 The direction of conventional current is:
✅ Correct Answer: B
Conventional current flows from the positive terminal to the negative terminal of a battery, which is opposite to the actual electron flow.
Conventional current flows from the positive terminal to the negative terminal of a battery, which is opposite to the actual electron flow.
16.2 What type of electric current flows in one direction only?
✅ Correct Answer: B
Direct current (DC) flows in one direction only, unlike alternating current (AC) which reverses direction periodically.
Direct current (DC) flows in one direction only, unlike alternating current (AC) which reverses direction periodically.
16.3 The device used to measure electric current:
✅ Correct Answer: B
An ammeter is used to measure electric current in a circuit. It is always connected in series with the circuit.
An ammeter is used to measure electric current in a circuit. It is always connected in series with the circuit.
16.4 What is the function of an electromotive force (e.m.f.) source in a circuit?
✅ Correct Answer: B
An electromotive force (e.m.f.) source provides the energy required to move charges around a circuit, maintaining the potential difference.
An electromotive force (e.m.f.) source provides the energy required to move charges around a circuit, maintaining the potential difference.
16.5 The relationship between voltage, current, and resistance is:
✅ Correct Answer: B
Ohm's Law states that voltage (V) is equal to current (I) multiplied by resistance (R), i.e., \(V = IR\).
Ohm's Law states that voltage (V) is equal to current (I) multiplied by resistance (R), i.e., \(V = IR\).
16.6 What happens to the resistance of a metal conductor when its temperature increases?
✅ Correct Answer: C
For most metal conductors, resistance increases with an increase in temperature because the atoms vibrate more, causing more collisions with electrons.
For most metal conductors, resistance increases with an increase in temperature because the atoms vibrate more, causing more collisions with electrons.
📐 Key Formulas – Electricity
Electric Current: \( I = \frac{Q}{t} \)
Ohm's Law: \( V = IR \)
Series Resistance: \( R_e = R_1 + R_2 + R_3 \)
Parallel Resistance: \( \frac{1}{R_e} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} \)
Electric Power: \( P = IV = I^2R = \frac{V^2}{R} \)
Electrical Energy: \( E = Pt \)
Resistivity: \( R = \rho \frac{L}{A} \)
Unit 10Thermal Physics
Unit 11Transfer of Thermal Energy
Unit 12Waves
Unit 13Sound
Unit 14Light
Unit 15Electrostatics
Unit 16✨ Electricity
Unit 17Electromagnetism
Unit 18Electromagnetic Induction & EM Waves
Unit 19Electronics
Unit 20Atomic and Nuclear Physics
Unit 21Space and Environment
📖 Complete syllabus coverage for Class 10 Physics (PECTAA 2026) – Units 10 to 21
💡 Exam Tip:
For board exams, read each question carefully and eliminate obviously wrong options. These MCQs follow the PECTAA 2026 pattern and are prepared by Subject Specialist Muhammad Tayyab.
Created by Hira Science Academy | Aligned with PECTAA 2026 Syllabus