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⚡Chapter Practice

Electromagnetic Induction & AC — JEE Practice

30 practice questions across 2 topics. Filter by difficulty, solve topic-wise MCQs, and review detailed solutions.

2 Topics30 Questions

Faraday's Law & EMI(15 Qs)

easy (5)

Q1Faraday's law states that the induced EMF equals:Q2Lenz's law states that the induced current:Q3Magnetic flux through a surface is:Q4The SI unit of magnetic flux is:Q5An EMF is induced in a loop when:

medium (5)

Q1A rod of length L moves with velocity v perpendicular to a uniform field B. The induced EMF is:Q2Self-inductance of a solenoid of N turns, length l, area A is:Q3The energy stored in an inductor carrying current I is:Q4Mutual inductance between two coils is defined as:Q5If the current through an inductor changes at rate dI/dt, the induced EMF is:

hard (5)

Q1A circular loop of radius R is in a time-varying field B = B₀sinωt perpendicular to the loop. The induced EMF is:Q2A conducting disc of radius R rotates at angular velocity ω in a perpendicular field B. The EMF between centre and rim is:Q3The time constant of an LR circuit is:Q4In a decaying LR circuit, the current drops to 1/e of initial value in time:Q5Eddy currents can be reduced by:

Alternating Current(15 Qs)

easy (5)

Q1The peak value of AC voltage V = V₀sinωt is:Q2The rms value of an AC voltage V₀sinωt is:Q3In a purely resistive AC circuit, voltage and current are:Q4In a purely capacitive circuit, current:Q5In a purely inductive circuit, current:

medium (5)

Q1The impedance of a series RLC circuit is:Q2Resonance in a series RLC circuit occurs when:Q3The power factor of an AC circuit is:Q4The quality factor (Q) of a resonant circuit is:Q5A transformer works on the principle of:

hard (5)

Q1In a series RLC circuit at resonance, the voltage across L or C can be:Q2The bandwidth of a series RLC circuit is:Q3The average power in an AC circuit is:Q4In a step-up transformer (turns ratio N₂/N₁ > 1):Q5The energy stored in the magnetic field of a solenoid per unit volume is:

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