Match List – I with List – II.
|
List - I |
List - II |
|
(A) Purely resistive AC circuit |
(I) No power dissipation |
|
(B) Purely inductive or capacitive AC circuit |
(II) Power is dissipated only in Resistor |
|
(C) LCR series AC circuit |
(III) Maximum power dissipation |
|
(D) Power dissipated at resonance in LCR series circuit |
(IV) Power is dissipated in L and C |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A)-(III), (B)-(I), (C)-(II), (D)-(III)
|
List - I |
List - II |
|
(A) Purely resistive AC circuit |
(III) Maximum power dissipation |
|
(B) Purely inductive or capacitive AC circuit |
(I) No power dissipation |
|
(C) LCR series AC circuit |
(II) Power is dissipated only in Resistor |
|
(D) Power dissipated at resonance in LCR series circuit |
(III) Maximum power dissipation |
- In a purely resistive circuit, voltage and current are in phase, so power factor is 1 → maximum power is dissipated.
- In a purely inductive or capacitive circuit, current and voltage are 90° out of phase → average power over a cycle is zero.
- In an LCR circuit, only the resistor consumes power; inductor and capacitor store and return energy.
- At resonance in an LCR circuit, impedance is minimum and current is maximum → power dissipation is maximum.
Note:(III) Maximum power dissipation is the correct match for both (A) and (D). This question is as per NTA.