Question

A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R₁, R₂ and R₃ respectively. Which of the following is hue?

Options

• R₁ = R₂ = R₃

• R₁ > R₂ > R₃

• R₃ > R₂ > R₁

• R₂ > R₃ > R₁

Answer 1

R₃ > R₂ > R₁

Explanation:

Current is inversely proportional to the resistance for the same potential. So higher resistance would allow less current to pass through its which is shown by R₃ as I₃ < I₂ < I₁.

∴ R₃ > R₂ > R₁