Which of the following wires would have the GREATESTresistance? Please explain a

Question

Which of the following wires would have the GREATESTresistance? Please explain a. an aluminum wire 10 cm in length and 3 cm in diameter b. an aluminum wire 5 cm in length and 3 cm in diameter c. an aluminum wire 10 cm in length and 5 cm in diameter d. an aluminum wire 5 cm in length and 5 cm in diameter Which of the following wires would have the GREATESTresistance? Please explain a. an aluminum wire 10 cm in length and 3 cm in diameter b. an aluminum wire 5 cm in length and 3 cm in diameter c. an aluminum wire 10 cm in length and 5 cm in diameter d. an aluminum wire 5 cm in length and 5 cm in diameter a. an aluminum wire 10 cm in length and 3 cm in diameter b. an aluminum wire 5 cm in length and 3 cm in diameter c. an aluminum wire 10 cm in length and 5 cm in diameter d. an aluminum wire 5 cm in length and 5 cm in diameter

Explanation / Answer

         Theresistance is R = L/A                                        =L / (d/2)2           For given wire R L/d2      Hence correct answer is a ( analuminum wire 10 cm in length and 3 cm in diameter)      Hence correct answer is a ( analuminum wire 10 cm in length and 3 cm in diameter)

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