Electromagnetic Induction - ISC Class 12 Physics Questions with Answers
21 past-paper questions on Electromagnetic Induction from ISC Class 12 Physics papers (2027-2018), newest first. Open one to see its answer.
- Answer the following questions: State any one difference between the nature of magnetic field inside a current carrying solenoid… 2027 · 3 marks · Short answer
- Explain why a blue coloured spark appears in a switch contact when a circuit containing a load like a heater, geyser or iron is… 2027 · 2 marks · Short answer
- What is motional emf? 2026 · 1 mark · Short answer
- State one method to minimise flux loss in a transformer. (Recall) 2026 · 1 mark · Short answer
- Figure 9 below shows a metallic rod PQ resting on two parallel thick and smooth metallic rails CS and DR. There is a uniform… 2025 · 3 marks · Short answer
- The electric current flowing in a wire in the direction B to A is decreasing. What is the direction of the induced current in the… 2025 · 1 mark · Short answer
- Figure 9 shows a metallic rod MN of length $l = 3\text{ m}$ moving in an external uniform magnetic field… 2025 · 5 marks · Numerical
- The magnetic field through a single loop of wire, $12\text{ cm}$ in radius and $8\cdot 5\ \Omega$ resistance, changes with time… 2025 · 5 marks · Numerical
- A circular coil of radius 8 cm and 20 turns rotates about its vertical diameter with an angular speed of $50\text{ s}^{-1}$ in a… 2025 · 1 mark · Numerical
- When current flowing through a solenoid decreases from $5\text{ A}$ to 0 in $20\text{ milliseconds}$, an emf of $500\text{ V}$ is… 2024 · 5 marks · Short answer
- What is meant by “Motional emf”? 2023 · 1 mark · Short answer
- When an electric current is passed through a wire or a coil, a magnetic field is produced. Is the reverse phenomenon possible… 2023 · 2 marks · Short answer
- Explain why a blue coloured spark is often seen in a switch when a circuit containing an electric iron/geyser is switched off. 2023 · 2 marks · Short answer
- Figure 4 below shows two thick metallic rails CD and GH kept parallel to each other $0\cdot8\text{ m}$ apart. They are joined to… 2023 · 5 marks · Numerical
- A metallic rod CD rests on a thick metallic wire PQRS with arms PQ and RS parallel to each other, at a distance… 2022 · 2 marks · Short answer
- Study the diagram given below: The direction of the current at end ‘P’ will be: The magnetic poles induced at the end ‘Q’ of the… 2022 · 2 marks · Short answer
- Figure 1 below shows a metallic rod MN of length $l = 80\text{ cm}$, kept in a uniform magnetic field of flux density… 2020 · 2 marks · Numerical
- When current flowing through one coil changes from $0\text{ Amp}$ to $15\text{ Amp}$ in $0\cdot2\text{ s}$, an emf of… 2020 · 2 marks · Numerical
- What is motional emf? State any two factors on which it depends. 2018 · 2 marks · Short answer
- Briefly explain the following terms: Curie temperature Self-induction 2018 · 2 marks · Short answer
- Why is the core of a transformer laminated? 2018 · 1 mark · Short answer
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