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Self Induction

21. Assertion...

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21. Assertion :Due to high inductance of any coil, the current attains it peak value relatively late in it Reason :Due to self induction coil opposses the flow of current through it.

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Q. Assertion :In the phenomenon of mutual induction, self Induction of each of the coil persists. Reason: Self induction arises when strength of current in one coil changes. In mutual induction, current is changing in both the individual coils.

Q. Assertion :An induced emf appears in any coil in which the current is changing. Reason: Self induction phenomenon obeys Faraday's law of induction.

Q. Assertion :An induced e.m.f. appears in any coil in which the current is changing Reason: Self-induction phenomenon obeys Faraday's law
of induction.

(A)

: Self-inductance is called the inertia of electricity.

Reason

(R)

: Self-inductance is the phenomenon, according to which "an opposing induced e.m.f. is produced in a coil as a result of change in current (or) magnetic flux linked in the coil".

Q. Assertion :If some ferromagnetic substance is filled inside a soleniod, its coeffecient of self-induction

L

will increase. Reason: By increasing the current in a coil its coefficient of self induction

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can be increased.

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