5. (7 points) A musician is playing a trombone near the surface of the Earth, and is standing such that the Earth's magnetic field is 40 uT pointing directly into the page (perpendicular to the trombone). The mu- sician can increase or decrease the length of the trombone. When the musician is playing the trombone as seen in the top image, the area enclosed by lengths a, b, c, and d is 0.023 m2. The musician then in- creases the length of the trombone to position 7 as seen in the bottom image. It takes the musician 0.10 seconds to increase the length. The new areas enclosed by lengths a, b, c, and d is 8 times larger than the initial area of 0.023 m2. (a) The total resistance of lengths a, b, c, and 1 2 d is 3 ohms, which stays constant as the trom- bone length increases. What is the magnitude aLIC of current within that loop during the 0.10 seconds that the musician is increasing the length? b 2 3 (b) Is the current from part (a) traveling along C the a, b, c, d loop clockwise or counterclock- wise? d