Power, Power Factor & Wattless Current
Match List I with List II

Choose the correct answer from the options given below:
| LIST I | LIST II | ||
| A. | Purely capacitive circuit | I. | |
| B. | Purely inductive circuit | II. | |
| C. | LCR series at resonance | III. |
Show answer and solution
Answer: (b)
- Purely capacitive: current leads voltage by .
- Purely inductive: voltage leads current by , as in graph IV, so B-IV.
- LCR at resonance: and in phase ().
- LCR series in general: and differ by some angle with .
- So the answer is (b) A-I, B-IV, C-II, D-III.