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A Conductor of Radius R, Length and Resistivity ρ

Question 12

Multiple Choice

A conductor of radius r, length 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. 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) 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. R.
B) 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. R.
C) R.
D) 4R.
E) 16R.

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