Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). |
Mark the correct choice as: |
Assertion [A]: Resonance is exhibited by a circuit only, if both L and C are present in the circuit. |
Reason (R): Only then the voltage across L and C cancel each other, both being out of phase. |
A) Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A]
B) Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A]
C) Assertion [A] is true but Reason (R) is false
D) Assertion [A] is false and Reason (R) is also false
Correct Answer: A
Solution :
(a) The resonance phenomenon is exhibited by a circuit only if both L and C are present in the circuit. Only then the voltages across L and C cancel each other, since both being out of phase and current amplitudes is \[{{V}_{m}}{{l}_{R}}\], the total source voltage appearing across R. This means that we cannot have resonance in a RL or RC circuit.You need to login to perform this action.
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