📘 Chapter 8: Magnetism – Exercise Short Answer 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 section covers exercise short answer questions from Chapter 8 Magnetism including Temporary and Permanent Magnets, Magnetic Field, Magnetic Lines of Force, Uses of Magnets and Electromagnets, Magnetic Domains, Solenoid Magnetic Field, and Paramagnetic vs Diamagnetic Materials. Each question is presented with a detailed answer 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 8: Magnetism
Magnetism covers magnetic materials, magnetic fields, electromagnets, electromagnetic induction, and applications.
📖 Exercise Short Answer Questions & Answers (PECTAA 2026)
8.1 What are temporary and permanent magnets?
Answer:
Temporary Magnets: Temporary magnets are the magnets that work in the presence of a magnetic field of permanent magnets. Once the magnetic field vanishes, they lose their magnetic properties.
Permanent Magnets: Permanent magnets retain their magnetic properties forever. These are either found in nature or artificially made by placing objects made of steel and some special alloys in a strong magnetic field for a sufficient time.
✅ Temporary: lose magnetism when field removed | Permanent: retain magnetism forever
8.2 Define magnetic field of a magnet.
Answer:
A magnetic field is the region around a magnet where another magnetic object experiences a force on it.
✅ Region around a magnet where magnetic force is experienced
8.3 What are magnetic lines of force?
Answer:
Magnetic lines of force are imaginary lines used to represent a magnetic field. They follow the pattern formed by iron filings around a magnet and show the direction and strength of the magnetic field.
✅ Imaginary lines representing magnetic field direction and strength
8.4 Name some uses of permanent magnets and electromagnets.
Answer:
Uses of Permanent Magnets: Permanent magnets are used in D.C motors, A.C and D.C electric generators, moving coil loud-speakers, door catchers and to separate iron objects from different mixtures.
Uses of Electromagnets: Electromagnets are used in electric bells, telephone receivers, simple magnetic relays, circuit breakers, cranes and maglev trains.
✅ Permanent: motors, generators, loudspeakers | Electromagnets: bells, relays, cranes, maglev trains
8.5 What are magnetic domains?
Answer:
The group of atoms in a ferromagnetic material form a region of about \(0.1\,\text{mm}\) size that is highly magnetized. This region is called a magnetic domain. Each domain behaves as a small magnet with its own north and south poles.
✅ Highly magnetized region (~0.1 mm) behaving as a small magnet
8.6 Which type of magnetic field is formed by a current-carrying long coil?
Answer:
A current-carrying long coil, called a solenoid, produces a magnetic field similar to the field of a bar magnet.
✅ Solenoid produces a field similar to a bar magnet
8.7 Differentiate between paramagnetic and diamagnetic materials.
Answer:
Paramagnetic materials: If the orbital and spin axes of the electrons in an atom are so oriented that their fields support one another and the atom behaves like a tiny magnet, the materials with such atoms are called paramagnetic materials. Examples are aluminium and lithium.
Diamagnetic materials: Magnetic fields produced by both orbital and spin motions of the electrons in an atom may add up to zero. In this case, the atom has no resultant field. The materials with such atoms are called diamagnetic materials. Examples are copper, bismuth and water.
✅ Paramagnetic: fields support each other (Al, Li) | Diamagnetic: fields cancel out (Cu, Bi, water)
📐 Key Concepts – Magnetism (Exercise Short Questions)
Magnetic Field: Region where magnetic force is experienced
Magnetic Lines: Imaginary lines showing field direction and strength
Magnetic Domain: Highly magnetized region (~0.1 mm)
Solenoid: Coil producing field similar to bar magnet
Paramagnetic: Aluminium, Lithium
Diamagnetic: Copper, Bismuth, Water
💡 Exam Tip:
For exercise short questions, write concise and accurate answers. Use definitions, formulas, and examples where required. These questions test your understanding of fundamental concepts like temporary and permanent magnets, magnetic field, magnetic lines of force, magnetic domains, and applications of magnets. These questions follow the PECTAA 2026 pattern and are prepared by Subject Specialist Muhammad Tayyab.
Chapter 1Physical Quantities and Measurements
Chapter 2Kinematics
Chapter 3Dynamics
Chapter 4Turning Effect of Forces
Chapter 5Work and Energy
Chapter 6Mechanical Properties of Matter
Chapter 7Thermal Properties of Matter
Chapter 8✨ Magnetism
Chapter 9Nature of Science
📖 Complete syllabus coverage for Class 9 Physics (PECTAA 2026) – Chapters 1 to 9
Created by Hira Science Academy | Aligned with PECTAA 2026 Syllabus