Question

Magnetic Flux... (refer to JPEG file) below.

Answer 1

Flux = B * A

Answer is B)

r is the distance between the wire and the plate

Answer 2

@Euler271: That's what I thought... but can you explain why \[2m^2\] was suddenly inserted into the equation of \[B=\frac{ (\mu_o)I}{2\pi r}\]? Is that to account for the length of the surface?

Answer 3

Flux of a Surface: Magnetic Field * Area of Surface

Answer 4

Ah I see. It says: \[m^2 \], "squared," so it's the area. I overlooked that.. Thank You, @Euler271!