Question

Calculate the resistance of metal wire of length 2m and area of cross section 1.5 x 10-6 m2, if the resistivity of the metal wire be 2.5 x 10-8 ohm meter.
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Answer 1

Answer:

=

$3.33 \times {10}^{ - 2} ohm$

Explanation:

Resistance, R

$= resistivity \: \times \frac{length}{area}$

$= 2.5 \times {10}^{ - 8} \times \frac{2}{1.5 \times {10}^{ - 6} } \\ = 3.33 \times {10}^{ - 2} ohm$

Answer 2

Explanation:

refer to the attachment