Question

The resistivity of two metals, A and B, are 16 and 56 nΩm, respectively. Two resistors are fabricated from A and B, respectively. The lengths of the resistors are the same, but the diameter of the resistor made from A (dA) is twice the diameter of the resistor made from B (dB). What is the ratio of the resistances? Give your answer as RA/RB.

A) 0.07


B) 0.14


C) 0.28


D) 0.56​

Answer 1

Answer:

You can find the Golden Ratio when you divide a line into two parts and the longer part (a) divided by the smaller part (b) is equal to the sum of (a) + (b) divided by (a), which both equal 1.618.19