Question

Two long thin wires carry currents of 2 A and 4 A out of the page. A magnetic force per meter of 5.0 × 10⁻⁴ ????/m acts on wire 2. What is the magnetic force per meter that acts on wire 1?

Answer 1

Step-by-step explanation:

Given

Current in two wires

`I_1=2 A`

`I_2=4 A`

Magnetic Force per unit length is given by

`(F)/(l)=(\mu _0I_1I_2)/(2\pi r)`

where
`\mu _0=space\ permittivity`

r=radial distance between wires

`F_(12)=5* 10^(-4) N/m`

Force on two wires will be equal in magnitudes but opposite in direction so Force on wire 1 duet o wire 2

`F_(12)=5* 10^(-4) N/m`