Calculate the resistance of 1 km long copper wire of radius 1 mm. (if resistivity of copper = 1.72 x 10-8)\ 1
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resistance offered by the wire is
5.605 ohm.
5.605 ohm.
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We know that,
R=rl/A
1 km= 1000 m
1.7 * 10^-8= 1.7/ 10^8
0.50mm= 0.50/100*1ooo m
Hence,
R=(1.7*1000*100*1000) / (10^8* 50)
={1.7* (10^8)} / {(10^8) * 50}
=1.7/50
=0.034 ohm
I hope, am right. Please like my answer if you like it.
R=rl/A
1 km= 1000 m
1.7 * 10^-8= 1.7/ 10^8
0.50mm= 0.50/100*1ooo m
Hence,
R=(1.7*1000*100*1000) / (10^8* 50)
={1.7* (10^8)} / {(10^8) * 50}
=1.7/50
=0.034 ohm
I hope, am right. Please like my answer if you like it.
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