Self-Induction and Mutual Induction

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Self-Induction and Mutual Induction: Overview

This topic covers concepts, such as, Induction, Self Induction, Back EMF & Coefficient of Mutual Inductance etc.

Important Questions on Self-Induction and Mutual Induction

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The SI unit of coefficient of mutual induction is

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The S.I. unit of self-inductance of a coil is 

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The circuit arrangement given below shows that when A.C. passes through the coil A, the current starts flowing in coil B.

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Mention the underlying principle involved.

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What is the expression for the self-inductance of a long, air-cored solenoid of length l, radius r, and having N number of turns?

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If 0.1 J of energy is stored for the flow of current of 0.2 A in an inductor, then its inductance value is

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What is the expression for the self-inductance of a long, air-cored solenoid of length l, radius r, and having N number of turns?

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If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

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What is self inductance of a coil which produces 5 V, when current in it changes from 3 A to 2 A in one millisecond?

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An inductance L and a resistance R are connected in series with a battery of emf E. If the maximum rate (in J/sec) at which the energy is stored in the magnetic field is1x then find x.  [Take E=0.2 V and R=1Ω].

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In the figure magnetic energyin J stored in the coil is:

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A coil of inductance 2 H having negligible resistance is connected to a source of supply whose voltage is given by V=3t volt. (where t is in second). If the voltage is applied when t=0, then the energy stored in the coil after 4 s is,

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A 50 mH coil carries a current of 2 A, the energy stored in J is

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Radii of two conducting circular loops are b and a respectively, where ba. Centres of both loops coincide but planes of both loops are perpendicular to each other. The value of mutual inductance for these loops

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What will be the self-inductance of a coil of 100 turns if a current 5 A produces a magnetic flux 5×10-5 Wb?

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The phenomenon due to which there is an induced current in one coil due to the current in a neighbouring coil is:

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The self-inductance of a long solenoid carrying current is independent of:

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Consider two solenoids A and B such that LA=2 LB and AA=12AB, where LA, AA and LB, AB are the length and area of the two solenoids respectively. If the magnetic energy stored in the both solenoids is same. What should be the ratio of their magnetic fields BABB=

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Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon

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The diagram shows a solenoid carrying a time-varying current, I=I0t. On the axis of this solenoid, a ring has been placed as shown in the figure at the right. The mutual inductance of the ring and the solenoid is M and the self-inductance of the ring is L. If the resistance of the ring is R, then maximum current which can flow through the ring is,

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