CBSE · Class 12 · Physics · Alternating CurrentA transformer cannot be used to step up or step down:
Step-by-Step Solution
Transformers work on mutual induction, which requires a changing magnetic flux. Direct current (DC) produces a constant magnetic flux; hence, a transformer does not work on DC.
Detailed Options Breakdown
Option : AC voltage
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Alternating Current.
Option 1: AC current
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Alternating Current.
Option 2: DC voltage (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: High frequency AC
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.