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Assertion: When a ferromagnetic rod is i...

Assertion: When a ferromagnetic rod is inserted inside an inductor, then current in L-C-R, alternating circuit will decrease.
Reason: By inserting the ferromagnetic rod inside the inductor, coefficient of self induction and hence the net impedance will increases.

A

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Text Solution

Verified by Experts

e) `Z=sqrt(R^(2)+(X_(L)-X_(C))^(2))`
By inserting the ferromagnetic rod L, and therefore `X_(L)` will increase. But value of Z and therefore I may increase, decrease or remain same.
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Knowledge Check

  • Assertion : In series L-C-R circuit, if a ferromagnetic rod is inserted inside an inductor, incr current in the circuit may ease or decrease. Reason : By doing so X_L will increase.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • When a material is inserted inside the inductor the current in the circuit increases, then the nature of the material is

    A
    ferromagnetic
    B
    paramagnetic
    C
    diamagnetic
    D
    all of the above

  • Assertion : If some ferromagnetic substance is filled inside a solenoid, its coefficient of self induction L will increase. Reason : By increasing the current in a coil, its coefficient of self induction L can be increased.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

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