Same chapter3 marksDifficulty: Medium
Describe how a piece of iron can be magnetised by the single touch method.
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3 marksDifficulty: Medium
Distinguish between a primary and a secondary cell, with one example of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
A primary cell converts chemical energy into electrical energy by an irreversible reaction and cannot be recharged; a dry cell is an example. A secondary cell stores energy by a reversible reaction and can be recharged many times; a lead-acid accumulator is an example.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A secondary cell can supply a much larger current than a primary cell.
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