Two wires of the same material, each 2 meters long, connected in parallel, the resultant resistance is 0,65 ohm's. One wire is 0,5mm in diameter the other is 1,5mm in diameter. Calculate the resistivity of the wire
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Explanation:
30 ohm
l = 50cm = 0.5m
r = 0.5mm = 5×10^(-4)m
\rho =?
R= \rho \frac{l}{A} \\ \\ \rho = \frac{RA}{l}= \frac{30 \times \pi \times
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