If a wire has a resistance, 1.32ohms,the length of 110cm,and an area of cross sectional of 0.00415cm,find the resistivity of the material of which it is made?
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resisitivity= resistance*area/length.
Now your cross sectional area you listed as 0.00415cm. Is this 0.00415cm^2?
resistivity should be in ohm-meter, so we will make that conversion later.
resistivity=resistance*area/length= 120ohm*.00415cm^2/120cm
now to make the change from cm to m..
=120ohm*.00415cm^2/120cm * 1m/100cm
that should do it.
Now your cross sectional area you listed as 0.00415cm. Is this 0.00415cm^2?
resistivity should be in ohm-meter, so we will make that conversion later.
resistivity=resistance*area/length= 120ohm*.00415cm^2/120cm
now to make the change from cm to m..
=120ohm*.00415cm^2/120cm * 1m/100cm
that should do it.
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