A wire of length 3 m and area of cross-section 1.7 × 10-6 m2 has a resistance
3 × 10-2 ohm....
a.) What is the formula for resistivity of the wire and what is the unit of it
b.) Calculate the resistivity of the wire
3 × 10-2 ohm....
a.) What is the formula for resistivity of the wire and what is the unit of it
b.) Calculate the resistivity of the wire
Answers & Comments
Answer:
given l =3m area =1.7×10^6m^2
Explanation:
given l =3m
area =1.7×10^6m^2
Verified answer
Explanation:
Resistance(R)= P1/A where p is the resistivity
Here from the given question
1=3m A=1.7×10 −6 m 2
m 2
p= RA/1
p= (3×10 −2 )(1.7×10 −6 ) ÷3
=1.7×10 −8 Ωm
=1.7×10 −8 ΩmKeeping the values we get the value p=1.7×10−8Ωm.....
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