alleryWith material and area fixed, doubling wire length makes R…
ATwice its former value
BHalf its former value
COne quarter its former value
DUnchanged from before
Answer & Solution
Correct answer: A. Twice its former value
Resistance is directly proportional to length.
Keep practising Electricity: Ohm's law, electrical power and energy, household circuits
Browse all Electricity: Ohm's law, electrical power and energy, household circuits questions for ICSE Class 10, or explore more Physics topics.
Related questions
What happens if a live wire touches an earthed case?Why can a short circuit cause a fire?A 12 V source drives 3 A through a resistor. What is the resistance?A resistive lamp uses 500 W at 10 A. What is its resistance?Three 6 Ω branches are in parallel across 12 V. What total current leaves the supply?A 2 Ω, 4 Ω and 6 Ω series chain is across 24 V. What voltage drops across the 6 Ω resistorA 12 Ω and 6 Ω pair in parallel is placed in series with 8 Ω. Find the total resistance.If one parallel lamp fails, what happens to another?