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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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121
178 When the current in a coil is reduced uniformly from 20 A to zero in 0.50 s, an emf of 4.0 V is induced in a nearby coil. What is the value of the mutual inductance between the two coils?
122
A simple electric motor has an armature resistance of one ohm and runs from a d.c. source of 12 volt. When unloaded it draws a current of 2 ampere. When a certain load is connected, its speed becomes one-half of its unloaded value. Then the current in ampere it draws is
123
56. If a current increases from zero to one ampere in 0.1 second in a coil of 5 mH, then the magnitude of the induced e.m.f will be
124
453 The efficiency of a transformer is
125
A real transformer does not change:
126
491 The electric supply line in houses works at 220 V. What will be the amplitude of emf?
127
A current in an inductor is reduced to a half. The energy stored in it will
128
Eddy currents are used in
129
If the rate of change of current in the coil is unity, then the induced emf is equal to
130
Induced current in a circuit depends upon