Question

A student took two wires, one made of copper and the other made of constantan, for making a thermocouple. He cut equal lengths of the two wires and found their resistances to be the same. The ratio of their resistivities is 2:3.

What is the ratio of the areas of the two wires?
Options

A)


1: 1


B)


1: 2


C)


2: 3
You Attempted Correct Option

D)


3: 2



Why?

Answer 1

C)2:3 is the correct answer