Question 1: The solenoid generating the magnetic field of a certain MRI machine has 1600 coils-per-meter, and produces a field of 2.0 T. What current is flowing in the solenoid? (a) 1.3 mA (b) 16 mA (C) 4.0 A (d) 1.0 kA (e) 13 kA Question 2: A cylindrical wire of radius 12mm carries a uniformly- distributed current of 7.9 A. What is the magnitude of the magnetic field 4.3 mm from the center of the wire? (a) 3.0 AT (b) 6.0 AT (c) 47 AT (d) 130 AT (e) 290 MTQuestion 3: A cylindrical wire of radius 12 mm carries a uniformly distributed current of 8.0 A. 'What is the maximum mag nitude of this Wire's magnetic eld? Note that this is the same wire as in Question 2. (a [1.047an ) (b) 0.13 mT (c) 0.29 mT ) (d 11 mT (e) 22 mT Question 4: Airplanes are typically made of aluminum, a good conduc tor. Suppose that an airplane with a wingspan of 72 n1 is fly ing perpendicular to the Earth's 50,111\" magnetic eld at a speed of 250 m/s. What is the induced emf across its wings? Question 5: The diagram below depicts a circuit consisting of a resistor and a moving conducting rod mounted on conducting rails in a perpendicular magnetic field. The rod is initially 0.24 meters from the resistor, moving away at 4.6m/s.