Question

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.

Answer 1

Correct Answer - A::B
`Z=sqrt(R^2+(X_C-X_L)^2)`
`X_L` will increase. So `Z` may increase or decrease depending on the value of `X_C` therefore, current may decrese or increase.