A rectangular loop of length \(\ell=80 \mathrm{~mm}\), width \(w=\) \(60 \mathrm{~mm}\), and resistance \(R=20 \mathrm{~V} / \mathrm{A}\) is located in a uniform magnetic field of magnitude \(B=0.50 \mathrm{~T}\). The area vector of the loop makes a \(45^{\circ}\) angle with the magnetic field direction. In \(0.40 \mathrm{~s}\), the magnetic field completely reverses direction. What is the average current in the loop during this time interval?