Page 5 of 7 blem 2 (15 points) A 12 volt battery is wired in series with an uncharged capacitor, a resistor and a switch to make an RC circuit. 1 (mA) At t 0 s, the switch is closed . Figure below shows the current through the resistor. What is the value of the capacitor? ( in nF) 10 8 A a 2 + 1 (ms) 0.1 0.2 0.3 0.4 Problem 3: (10 points) A circular coil of wire has 25 turns, a radius of 0. 750 m and a resistance of 4.00 m$2 . The coil is located in a variable magnetic field whose behavior is shown on the graph. At all times, the magnetic field is directed at an angle of 63.0 relative to the plane of the coil (x-y plane) and pointing in the +z direction. Determine the current induced (magnitude and direction) in the coil between 0-2.50 s, and between 7.50 & 10.0 seconds. (5 points) Show how the units work out. B B (T) 0.80+ 0.60+ 0.00- 1 (s