A nichrome wire 1 m long and 1 mm 2 in cross-section area draws 4 A current at 2 volt…
Physics · JEE Main · NTA Exams — Current Electricity
A nichrome wire 1 m long and 1 mm2 in cross-section area draws 4 A current at 2 volt. The resistivity of nichrome is
- 1 × 10–7 Ω–m
- 2 × 10–7 Ω–m
- 4 × 10–7 Ω–m
- 5 × 10–7 Ω–m
Answer
(D) 5 × 10 –7 Ω –m
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A coil takes 15 minutes to boil certain amount of water, another coil takes 20 minutes for the same process…
- The specific resistance of a wire is ρ, its volume is 3 m 3 and its resistance is 3 ohm, then its length will…
- For a cell terminal potential difference is 2.2 volt when circuit is open and reduces to 1.8 volt when cell…
- The terms or quantities in electricity analogous to temperature and friction in mechanical motion are…
- Which of the following material has negative temperature coefficient of resistance.
- The figure shows currents in a part of an electric circuit, then current I is
- What is the value of R so that ammeter reads zero in the circuit shown below.
- The resistance of a 10 m long wire is 10 Ω. Its length is increased by 25% by stretching the wire uniformly…
More Current Electricity questions · Browse all practice questions