alleryHalving the cross-section area of a conductor makes resistance:
AZeroing
BDouble
CHalved
DSame as
Answer & Solution
Correct answer: B. Double
1. A narrower path is harder for charge to cross.
2. Resistance varies inversely with area.
3. So halving the area doubles the resistance.
4. The answer is double.
_Source: syllabus Physics, Ch 3 'Current Electricity'_
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