Constantan is an alloy of copper and

Options

A. Iron
B. Nickel
C. Aluminium
D. Tin

Answer

B

Explanation

Constantan. is a copper nickel alloy also known as Eureka, Advance, and Ferry. • It usually consists.of 55% cop per and 45% nickel. • Its main feature is the low ther mal variation of its resistivity, which is constant over a wide range of temperatures, • Of all modern strain gauge al loys, constantan is the oldest, and still the most widely used