A conductor of radius r, length and resistivity ρ has resistance R. It is melted down and formed into a new conductor, also cylindrical, with one fourth the length of the original conductor. The resistance of the new conductor is
A) R
B) R
C) R
D) 4R
E) 16R

Question

A conductor of radius r, length  and resistivity ρ has resistance R. It is melted down and formed into a new conductor, also cylindrical, with one fourth the length of the original conductor. The resistance of the new conductor is
A) R 
B) R 
C) R 
D) 4R 
E) 16R

Quizplus · Accepted Answer

The Answer of A conductor of radius r, length  and resistivity ρ has resistance R. It is melted down and formed into a new conductor, also cylindrical, with one fourth the length of the original conductor. The resistance of the new conductor is
A) R 
B) R 
C) R 
D) 4R 
E) 16R

A Conductor of Radius R, Length and Resistivity ρ