A bird sits on a high-voltage power line with its feet 5.000 cm apart. The wire is made from aluminum, is 2.00 cm in diameter, and carries a current of 170.0 A. What is the potential difference between the bird's feet?

The potential difference between the bird's feet is 0.71 mV

Explanation:

Given-

Distance between the feet, x = 5 cm = 0.05 m

Diameter of the wire = 2 cm

Radius, r = 2/2 = 1 cm = 0.01 m

Current, I = 170 A

Potential difference, ΔV = ?

We know,

ΔV = IR

Where,

ΔV is the potential difference

I is the current

R is the resistance of the wire

And also

R = ρ L/ A

where,

ρ is the resistivity of aluminium wire (ρ = 2.65 X 10⁻⁸ Ωm)

L is the length

A is the area

Equating both the equations,

ΔV = I * ρL/A               (The value of R is replaced in the first equation)

ΔV =

Therefore, the potential difference between the bird's feet is 0.71 mV

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force