NCERT · Class 12 · Physics · Alternating CurrentIf the phase difference between alternating voltage and current in an AC circuit is $\phi$, the power factor is:
Step-by-Step Solution
Power factor is defined as the cosine of the phase angle between voltage and current, i.e., Power Factor = $\cos\phi$.
Detailed Options Breakdown
Option : $\sin\phi$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Alternating Current.
Option 1: $\cos\phi$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: $\tan\phi$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Alternating Current.
Option 3: $\cot\phi$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Alternating Current.
💡 Study Guide: This question tests core syllabus concepts from Alternating Current. For formulas, key summaries, and mock exam reference guides, read the full Alternating Current Revision Notes.