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Electromagnetic Induction NAT Level - 1 - IIT JAM MCQ


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10 Questions MCQ Test - Electromagnetic Induction NAT Level - 1

Electromagnetic Induction NAT Level - 1 for IIT JAM 2024 is part of IIT JAM preparation. The Electromagnetic Induction NAT Level - 1 questions and answers have been prepared according to the IIT JAM exam syllabus.The Electromagnetic Induction NAT Level - 1 MCQs are made for IIT JAM 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Electromagnetic Induction NAT Level - 1 below.
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*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 1

On passing a current of 2A in a coil of inductance 5H, the energy (in Joule) stored in it will be :


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 1

The correct answer is: 10

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 2

The self inductances of two identical coils are 0.1 H. They are wound over each other. Mutual inductance will be (in Henry).


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 2

The correct answer is: 0.1

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*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 3

In the figure magnetic energy (in Joules) stored in the coil is (in steady state).


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 3


The correct answer is: 25

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 4

When current flowing in a coil changes from 3A to 2A in the millisecond, 5 volt emf is induced in it. The self-inductance of the coil (in mH) will be :


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 4

The correct answer is: 5

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Electromagnetic Induction NAT Level - 1 - Question 5

The magnetic flux linked with the coil varies with time as  φ = 3t2 + 4t + 9. The magnitude of induced emf (in Volts) at  t = 2 second is.


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 5


The correct answer is: 16

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Electromagnetic Induction NAT Level - 1 - Question 6

The spokes of a wheel are made of metal and their lengths are of one metre. One rotating the wheel about its own axis in a uniform magnetic field of 5 × 10–6 tesla  normal to the plane of the wheel a potential difference of 3.14 mV  is generated between the rim and the axis. The rotational velocity  of the wheel is (in  rev/sec).


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 6


The correct answer is: 20

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 7

If in a coil rate of change of area is 5m2/ms  and current becomes Amp from Amp in 2×10–3sec. If magnetic field is tesla  then self inductance (in Henry) of the coil is :


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 7


The correct answer is: 10

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 8

When the primary current in the spark coil of a car changes from 4A to zero in 10µs, an emf of 40,000V  is induced in the secondary. The mutual inductance (in  Henry) between the primary and the secondary windings of the spark coil will be.


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 8


M = 0.1H
The correct answer is: 0.1

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 9

A metallic rod completes its circuit as shown in the figure. The circuit is normal to a magnetic field  B = 0.15 tesla. If the resistances of the rod is  the force required to move the rod with a constant velocity of 2 m/sec is    Find the value of  α.


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 9

The correct answer is: 3.75

*Answer can only contain numeric values
Electromagnetic Induction NAT Level - 1 - Question 10

Area of a coil is 0.16 m2. If magnetic field through it changes from 0.1 Wb/m2 to 0.5 Wb/m2  in  0.02 s, then the emf induced (in Volts) in the coil will be.


Detailed Solution for Electromagnetic Induction NAT Level - 1 - Question 10

The correct answer is: 3.2

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