1)The figure below shows a very fine current-carrying (L×w) = (4cm×1cm) rectangular wire loop beinglevitated by a current-carrying wireh= 3mmfrom its top edge. The combined mass of the wire loop andthe battery driving theI2= 0.5Acurrent through it (not pictured) ism= 0.23g. What is the currentthrough the straight wire,I1?
* the attachment is for Question 1
2)An iron atom has a mass ofm= 9.273×10−26kg, permanent magnetic dipole moment ofM=1.8×10−23Am2, and is approximately spherical with radius 1.4×10−10m. Suppose that an iron atom isheld in place so that its magnetic dipole moment is perpendicular to Earth’s magnetic field (B= 5.1×10−6T).What is its angular acceleration when first released?