A manufacturer recommends that the longer the extension cord you use with an electric drill, the bigger the cross-sectional area of the cord should be.
What is a reason for this recommendation?
1 )
Resistance is inversely proportional to both the length and the cross-sectional area.
2 )
Resistance is inversely proportional to the length and directly proportional to the cross-sectional area.
3 )
Resistance is proportional to both the length and the cross-sectional area.
Resistance is proportional to the length and inversely proportional to the cross-sectional area.
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