Which conductor has the greatest resistance in the DC circuit – a solid copper rod or a copper tube with an outer diameter

Which conductor has the greatest resistance in the DC circuit – a solid copper rod or a copper tube with an outer diameter equal to that of the rod? The length of both conductors is considered the same.

Copper tube has more resistance than solid copper rod because its cross-sectional area is less than that of the bar.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.