A Conductor of Radius R,length $\ell$ And Resistivity $\rho$ Has Resistance R $\frac { 1 } { 16 }$

question 69

Multiple Choice

A conductor of radius r,length $\ell$ and resistivity $\rho$ 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) \(\frac { 1 } { 16 }\) R
• B) \(\frac { 1 } { 4 }\) R
• C)R
• D)4R
• E)16R

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