Question

the specific resistance of nichrome is 100 micro ohm cm and what will be the resistance of nichrome wire of length 5 m and area of cross section 0.01 CM square

Answer 1

The resistance of the wire is 5 ohm.

Answer 2

Given:

The specific resistance of nichrome = 100 micro ohm cm

length of wire 5 m

area of cross section 0.01 CM square

Explanation:

Length = 5m

Area of cross section = 0.01 cm² = 1 × 10⁻⁶ m²

R = 100μΩ = 0.0001Ω

Now, using formula

          R = ρL/A

          RA/L =ρ

          [0.0001 ×(1× 10⁻⁶)]/5

          = 2e-10

Answer = 2e -10