A manufacturer advises that, when an electric drill is used with a longer extension cord, the cord should have a larger cross-sectional area. What is one reason for this recommendation?
- AResistance is inversely proportional to both the length and the cross-sectional area.
- BResistance is inversely proportional to the length and directly proportional to the cross-sectional area.
- CResistance is proportional to both the length and the cross-sectional area.
- DResistance is proportional to the length and inversely proportional to the cross-sectional area.