Question

A square loop of wire 10.0 cm on a side is in a 1.25 T magnetic field B. What are the maximum and minimum values of flux that can pass through the loop?

Answer 1

$$\Phi_{min}=0$$

$$\Phi_{max}=BA=Ba^2\\ =\rm 1.25\: T\times (0.1\: m\times 0.1\; m)=0.0125\: Wb$$