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

Answer:

Explanation:

Given

Current in two wires

$I_1=2 A$

$I_2=4 A$

Magnetic Force per unit length is given by

$\frac{F}{l}=\frac{\mu _0I_1I_2}{2\pi r}$

where $\mu _0=space\ permittivity$

r=radial distance between wires

$F_{12}=5\times 10^{-4} N/m$

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

$F_{12}=5\times 10^{-4} N/m$