The straight conductor below carries current i.
Indicate the direction of the B field inside the rectangle and find an expression for the total flux  passing through the rectangular area A = bc

Question

The straight conductor below carries current i. 
Indicate the direction of the B field inside the rectangle and find an expression for the total flux   passing through the rectangular area A = bc

anonymous · Answer

If i = 2.0 A,       c = 3 cm and    b = 2*a, find the magnitude of the flux  $$\phi $$ through the rectangle

anonymous · Answer

Note: You must use integration
PS: Do not bother please, if you are not familiar with such type of question

anonymous · Answer

@amistre64

amistre64 · Answer

im not confident in systems of electricity.  I believe flux in general is a calculation of the amount of flow thru a surface.  if given a vector field F that defines the direction and magnitude of the flow in the system, then the surface gradient provides a normal (unit normal might need to be used) perpendicular direcion to be able to find the Force, or Flow, thru the surface.

amistre64 · Answer

but im not too sure how i would implement that with the information given here

anonymous · Answer

$$\int\limits_{}^{}dΦr=\int\limits_{a}^{a+b}(μ0Ι/2πr)(cdr)$$

anonymous · Answer

$$Φr=μ0Ιc/2π\int\limits_{a}^{a+b}dr/r$$

anonymous · Answer

$$Φr=(μ0Ιc/2π)\ln (a+b/a)$$

anonymous · Answer

put the numbers,get your flux