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Electromagnetic Induction MCQs

Prepare for Electromagnetic Induction MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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Topic Notes: Electromagnetic Induction

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Master Electromagnetic Induction MCQs for Competitive Exams with our comprehensive, verified question bank. Designed for students and competitive exam aspirants across Pakistan, this study resource provides topic-wise practice questions for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests.

Exam Focus
Aligned with FPSC, PPSC, and CSS syllabus criteria for Electromagnetic Induction.
Past Papers
Includes frequently repeated questions from past examinations.
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Each question features verified answers and conceptual explanations.

Preparation Guide & Key Focus Areas for Electromagnetic Induction MCQs

When preparing for Electromagnetic Induction MCQs (Physics), focus on core definitions, historical timelines, relevant provisions, and commonly tested factual points. Review each question below, test your knowledge against the given options, and inspect the detailed explanation to solidify your understanding.

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41
The diagram shows an iron-cored transformer assumed to be 100% efficient. The ratio of the secondary turns to the primary turns is 1 : 20. A 240 V ac supply is connected to the primary coil and a 6.0 Ω resistor is connected to the secondary coil. What is the current in the primary coil?
42
The 'henry' is a unit of
43
46. The alternating voltage induced in the secondary coil of a transformer is mainly due to
44
471 The time-constant of a RL circuit is
45
In 0.05 second, an e.m.f. of BV is induced in a coil. The coefficient of self-induction of the coils is
46
A 0.1 m long conductor carrying a current of 50 A is perpendicular to a magnetic field of 1.25 mT. The mechanical power required to move the conductor with a speed of 1 m s⁻¹ is
47
A 100 millihenry coil carries a current of 1 ampere. Energy stored in its magnetic field is
48
53. A 50 mH coil carries a current of 2 amp. The energy stored in joule is
49
We have two coils placed close to each other. When we switch on the battery connected to primary coil while keeping the sliding contact of rheostat at fixed position, the reading of Galvanometer:
50
______ in fact, acts as converter of energy.