# Magnetic Flux Density

A 1mm-diameter copper wire is shaped into a square loop of side = 4cm. It is placed in a plane normal to a magnetic field increasing with time as $$\vec{B}$$=1t$$\hat{z}$$Wb/m2. Calculate the magnetic flux density at the center of the loop.

I found that the magnitude of the induced current is 0.456 A

## The Attempt at a Solution

I know that H will be in -z direction

B=4$$\mu$$0H

H=?