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What is the value of the self inductance?

Important Questions on Electromagnetic Induction

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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
In an inductor of self-inductance L=2 mH, current changes with time according to relation i=t2e-1. At what time emf is zero?
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
If N is the number of turns in a circular coil, the value of its self inductance varies as
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction

Two inductors L1 and L2 are connected in parallel and a time varying current flows as shown in figure. The ratio ot current i1i2 at any ime t IsQuestion Image

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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
Two different coils have self-inductance L1=9 mH and L2=3 mH. At a certain instant, the current in the two coils is increasing at the same rate and the power supplied to the coils is also the same. The ratio of the energy stored in the two coils U1U2at that instant is
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A long solenoid has 1000 turns. When a current of 4 A flows through it the magnetic flux linked with each turn of the solenoid is 4×10-3 Wb. The self-inductance of the solenoid is:
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
How does the self-inductance of a coil depend on the number of turns of the coil?
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A series L-R circuit is connected to a battery of emf V. If the circuit is switched on at t=0, then the time at which the energy stored in the inductor reaches 1n times of its maximum value, is :
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
What is meant by "self induction of a coil is 1H".
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A long solenoid has 500 turns. When a current of 2 A is passed through it, the resulting magnetic flux linked with each turn of the solenoid is 4×10-3 Wb, then self-inductance of the solenoid is
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a duration of 0.025 ms . The self-inductance of the choke (in mH ) is estimated to be ________
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
If the inductance of a coil is 1 H, its effective resistance in a DC circuit will be
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A long solenoid has 1000 turns. When a current of 4A flows through it, the magnetic flux linked with each turn of the solenoid is 4×10-3 Wb. The self-inductance of the solenoid is
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
The inductance in a coil plays the same role as
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
The average emf induced in a coil, when the current in it changes from 2 A to 4 A in 0.05 s, is 8 V. Find the self-inductance of this coil.
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A coil of wire of 1000 turns has self inductance 120 millihenry. The self inductance of a coil 250 turn is
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
The current in a coil of L=40 mH is to be increased uniformly from 1 A to 11 A in 4 milliseconds. The induced e.m.f. will be
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
Establish an expression for the self inductance of a solenoid
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
The total number of turns and cross-section area in a solenoid is fixed. However, its length L is varied by adjusting the separation between windings. The inductance of solenoid will be proportional to:
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A coil of wire of radius r has 600 turns and a self-inductance of 108 mH. The self inductance of a similar coil of 500 turns will be
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Physics>Electricity and Magnetism>Electromagnetic Induction>Self Induction
A toroidal solenoid with air core has an average radius R number of turns N and area of cross-section A. The self-inductance of the solenoid is (Neglect the field variation across the cross-section of the toroid)