1. The problem statement, all variables and given/known data The drawing below shows a circular loop of wire (raadius 0.15m) connected to a power supply. The top loop is directly over the bottom loop, which is not connected to anything. In the picture, the loops are shown parallel with one over the other, with the perspective looking at an angle from the top. When looking from the top, the negative terminal is connected to the top loop, which then loops around CCW to the positive terminal. A) When the switch is first turned on, in which direction will the current first flow in the bottom loop? B) The bottom coil receives a constant magnetic field of 0.8 T from the top coil and starts spinning perpendicular to its original plane at a speed of two revolutions per second. Find the average emf induced in that coil as it rotates through one-fourth of a revolution. C) If the bottom loop begins rotating away from the viewer (the near part of the loop begins to move down), which direction is current first induced in that loop? 2. Relevant equations for B: V = N*B*A*w*sin(theta) The others are just going to be drawings I believe 3. The attempt at a solution A) Using RH rule, the field is going to point upwards. I believe that the current would therefore flow the same direction in the lower loop, but I'm not sure if I need to factor something else in. If someone could just help explain to me how to figure out part A, that would be a great start. The online class I'm taking does not explain Lenz's law hardly at all, so I am not really sure how to do this. I'll move on to the other parts after I get this one. Thanks!