Questions
A nichrome wire
detailed solution
Correct option is A
Length l=50 cm=50×10−2 m Area of cross section A=10−6 m2Current i=4 APotential difference V=2 VResistivity ρ=?V=iR⇒iρlA⇒ρ=VAil⇒2×10−64×50×10−2 ∴ ρ=1×10−6ΩmTalk to our academic expert!
Similar Questions
In an experiment, current measured is , potential difference measured is , length of the wire is and the diameter of the wire is (all in correct significant figures). Find resistivity of the wire in correct significant figures. [Take, , (exact)]
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