Which of the following has the highest resistivity?
Correct answer: A. Germanium
- A. Germanium
- B. Silver
- C. Copper
- D. Platinum
Explanation
Resistivity (ρ), is resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length 1ρ = RA/l . The units of which are ohm.meter.The resistivity depends on the material of the conductor and the values of each element in a descending order is as follows,4.6×10-1, germanium10.6×10-8, platinum1.6×10-8, copper1.59×10-8, silverGermanium has the highest resistivity, while Silver has the least resistivity.
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