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When a rate of change of current in a ci...

When a rate of change of current in a circuit is unity, the induced emf is equal to

A

thickness of coil

B

number of turns in coil

C

coefficinet of self inductance

D

total flux linked with coil

Text Solution

Verified by Experts

The correct Answer is:
C
As , `epsi=L(dI)/(dt)`
When `(dI)/(dt)=1` `:. Epsi=L`
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STATEMENT - 1 : Whenever there is a change in flux linked with a coil in a circuit, an induced current is set up in it. and STATEMENT - 2 : Whenever there is a change in flux linked with a coil in a circuit, an induced emf is set up in it.

At the instant when the current in an inductor magnitude of the self-induced emf is 0.0640 A//s , the magnitude fo the self- induced emf is 0.0160 V . (a) What is the inductance of the inductor? (b) If the inductor is a solenoid with 400 turns, what is the average magnetic flux through each turn when the current is 0.720A ?

Knowledge Check

  • By a change of current from 5 A to 10 A in 0.1 s, the self induced emf is 10 V. The change in the energy of the magnetic field of a coil will be

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    B
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    C
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    D
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  • By a change of current from 5 A to 10 A in 0.1 s, the self induced emf is 10 V. The change in the energy of the magnetic field of a coil will be

    A
    `5J`
    B
    `6J`
    C
    `7.5J`
    D
    `9J`

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