NEETPhysicsAlternating Current
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The impedance of series L-C-R circuit can be greater, equal or less than the resistance. Reason (R) : The impedance of series LCR circuit depends over angular frequency of applied emf. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true and (R) is NOT the correct explanation of (A).
- C(A) is true but (R) is false.
- D(A) is false but (R) is true.
Correct answer
B. Both (A) and (R) are true and (R) is NOT the correct explanation of (A).
Step-by-step solution
Assertion (A) is true because the impedance of a series L-C-R circuit can vary depending on the relationship between inductive reactance, capacitive reactance, and resistance. Reason (R) is also true, as the impedance does depend on the angular frequency. However, (R) does not explain (A) because it doesn't clarify why impedance can be greater, equal, or less than resistance; it only states that impedance varies with frequency.