A Conductor of Radius R, Length and Resistivity ρ

question 19

Multiple Choice

A conductor of radius r, length and resistivity ρ has resistance R. What is the new resistance if it is stretched to 4 times its original length?

• A) R
• B) R
• C) R
• D) 4R
• E) 16R

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Definitions:

Spectral Data

Refers to information obtained from the analysis of the spectrum of light that a substance emits or absorbs, which can reveal properties about the substance's composition and structure.

IR

Infrared spectroscopy, a technique used to identify and study chemicals through the absorption of light in the infrared spectrum.

NMR

Nuclear Magnetic Resonance, a spectroscopic technique that exploits the magnetic properties of certain nuclei to determine the structure of compounds.

Molecular Formula

A notation representing the number and type of atoms in a molecule without depicting the bonds (e.g., H2O for water).