Physics · JEE

Electromagnetic Induction and Alternating Currents Mock Test for JEE

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Subtopics in Electromagnetic Induction and Alternating Currents

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Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Which of the following is true in context of Eddy currents?

Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Choose the incorrect statement.

Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

An alternating voltage given as

\boldsymbol{V}=

\mathbf{1 0 0} \sqrt{\mathbf{2}} \sin 100 t \quad

is applied to a capacitor of

1 \mu F

. The current reading of the ammeter will be equal to

\mathrm{mA}

Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

The average half-cycle value of a sine wave with a

40 V

peak is

Q5PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Which of the following statement regarding transformer is incorrect?

Q6PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

A circuit has a self-inductance of

1 \boldsymbol{H}

and carries a current of

2 A .

To prevent sparking, when the circuit is switched off, a capacitor which can withstand

400 V

is used. The least capacitance of the capacitor connected across the switch must be equal to

Q7PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

The input AC voltage to the transformer is

3 \mathrm{kV}

and output is

100 \mathrm{V}

. Then:

Q8PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

A magnet is allowed to fall through a copper circular wire. Then during fall:

Q9PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Ratio of impedance to capacitive reactance has

Q10PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

A sinusoidal voltage

V=200 \sin 314 t

is applied to a

10 \Omega

resistor. Find rms current

Q11PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

The power loss in an

A C

circuit is

E_{r m s}

I_{r m s},

when in the circuit there is only

Q12PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Assertion (A): More the turns more is the resistance Reason(R): Impedance of primary and secondary in a transformer is directly proportional to number of turns in the coils.

Q13PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

An LC circuit has

L=5 \mathrm{mH}

and

C=20 \mu \mathrm{F}

\boldsymbol{v}=\mathbf{5} \times \mathbf{1 0}^{-\mathbf{3}}

coswt is supplied. is twice the resonant frequency. Find the maximum charge stored in the capacitor:

Q14PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

If given arrangement is moving towards left with speed

v,

then potential difference between

B

and

D

and current in the loop are respectively.

Q15PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Magnitude of e.m.f. produced in a coil when a magnet is inserted into it does not depend upon:

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Frequently asked questions

How long should a Electromagnetic Induction and Alternating Currents mock test take?

For a topic-level test, aim for 20–30 minutes. For a full subject mock, allow 60–90 minutes to mirror JEE timing.

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Aim for 70%+ accuracy initially, then push toward 85%+ as your exam date approaches. Review explanations for every wrong answer.

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