Question

Resistivity of copper is 1.76 x 10^-6 ohm.cm. Determine the
resistance of a copper rod having length 10 cm and cross
sectional area 1 cm^2.​

Answer 1

Answer:

The resistivity of copper is 1.76 x 10-8 ohm metre the radius of the wire is 1mm, calculate the lenght of wire needed for having resistance of 10.5 ohm.

Answer 2

we know that

$resistance = \frac{rho \times length}{area}$

then ,

R

$= \frac{1.76 \times 10 {}^{ - 5} \times 10}{1} ohm$

$= 1.76 \times 10 {}^{ - 5} ohm$

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