Q1. A wire is 1.0 m long , 0.2mm in diameter and has a resistance of 10 Ohms. Calculate the
resistivity of its material.
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Q1. A wire is 1.0 m long , 0.2mm in diameter and has a resistance of 10 Ohms. Calculate the
resistivity of its material.
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Answer:
l=1m ,d=0.2mm=>r=0.1mm and R=10 ohm
by using the formula,
R= p౹/ A
= p౹/ πr²
therefore, p= Rπr²/l
= 10× 3.14×( 0.1× 10 -³)²
= 10× 3.14× 0.1×0.1× 10 to the power -6
= 0.314× 10 to the power-6
= 3.14× 10 to the power-7 ohm- m
hence, the resistivity of the conductor is 3.14× 10 to the power-7 ohm- m
Explanation:
hope this helps please follow
Answer:
hope this helps please follow