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Standard XII

Physics

Self Induction

Assertion :In...

Question

Assertion :In series $L C R$ circuit if a ferromagnetic rod is inserted inside an inductor, current in the circuit may be increase or decrease. Reason: By doing so $X_{L}$ will increase.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$Z = \sqrt{R^{2} + (X_{C} \sim X_{L})^{2}}$
$X_{L}$ will increase.
So, $Z$ may increase or decrease, depending on the value of $X_{C}$ .
Therefore current may decrease or increase.

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Assertion :In series LCR circuit if a ferromagnetic rod is inserted inside an inductor, current in the circuit may be increase or decrease. Reason: By doing so XL will increase.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionZ=√R2+(XC∼XL)2XL will increase. So, Z may increase or decrease, depending on the value of XC. Therefore current may decrease or increase.

Assertion :In series $L C R$ circuit if a ferromagnetic rod is inserted inside an inductor, current in the circuit may be increase or decrease. Reason: By doing so $X_{L}$ will increase.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$Z = \sqrt{R^{2} + (X_{C} \sim X_{L})^{2}}$
$X_{L}$ will increase.
So, $Z$ may increase or decrease, depending on the value of $X_{C}$ .
Therefore current may decrease or increase.