NUST NET Physics — Electromagnetic Induction
Electromagnetic Induction is part of the FSc Physics course that NUST NET-Engineering draws on (Physics is 60 of the 200 MCQs). It breaks into 3 subtopics, and we hold 61 NET-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (3)
How Electromagnetic Induction is tested
Across the 8 NET-pattern papers on ParhaiKrlo, Electromagnetic Induction accounts for 23 questions. It appears in all 8, about 2.9 questions a paper. The heaviest was NUST NET Past Paper 07, with 3 questions.
| Paper | Questions |
|---|---|
| NUST NET Past Paper 07 | 3 |
| NUST NET Past Paper 08 | 3 |
| NUST NET Past Paper 05 | 3 |
| NUST NET Past Paper 06 | 3 |
| NUST NET Past Paper 03 | 3 |
| NUST NET Past Paper 04 | 3 |
| NUST NET Past Paper 01 | 3 |
| NUST NET Past Paper 02 | 2 |
Electromagnetic Induction MCQs from the NET-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · NUST NET Past Paper 07 · Electromagnetic Induction
Lenz's law is a consequence of the law of conservation of:
- A.energy
- B.charge
- C.momentum
- D.mass
Show answer
Answer: A. energy — The induced current opposes its cause, as energy conservation demands.
- Q2 · NUST NET Past Paper 08 · Electromagnetic Induction
The magnetic flux through a flat coil is maximum when the magnetic field is:
- A.parallel to the plane of the coil
- B.at 45° to the plane of the coil
- C.zero
- D.perpendicular to the plane of the coil
Show answer
Answer: D. perpendicular to the plane of the coil — Φ = BA cos θ is maximum (BA) when B is along the normal, i.e. perpendicular to the coil's plane.
- Q3 · NUST NET Past Paper 05 · Electromagnetic Induction
The current in a 0.5 H inductor falls from 5 A to 1 A in 0.1 s. The average self-induced emf is:
- A.20 V
- B.2 V
- C.40 V
- D.10 V
Show answer
Answer: A. 20 V — ε = L ΔI/Δt = 0.5 × 4/0.1 = 20 V.