Same chapter3 marksDifficulty: Medium
On what factors does the resistance of a wire depend, and how?
Current Electricity
1 markDifficulty: Medium
The resistance of a wire is doubled if its:
- alength is doubled
- barea of cross-section is doubled
- ctemperature is halved
- dcurrent is doubled
Original Khojo Papers practice question — not from a past board paper.
Answer
length is doubled
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Resistance is directly proportional to length and inversely proportional to area of cross-section.
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