Consider two infinite large parallel current carrying sheet. Current unit width in both sheets is `(1)/(sqrt(pi))A//m`. If direction of current in both sheets is same than force per unit area on each sheet will be :

Options

A. `10^(-7)N//m^(2)`
B. `0.5xx10^(-7)N//m^(2)`
C. `2xx10^(-7)N//m^(2)`
D. `10^(-5)N//m^(2)`

Explanation

Magneic field due to one of the sheet
`B=(mu_(0)K)/(2)` Parallel to second sheet Force on section of width b
`F=bKl(mu_(0)K)/(2)`
Force per unit area
`P=(B)/(lb)=(mu_(0)K^(2))/(2)`
`P=4pixx10^(-7)(1)/(2pi)`