A. If a 3.2 millifarad capacitor with an initial charge of 0.248 Coulombs is placed into a circuit with a 500. ohm resistor, what will be the charge remaining on the capacitor after 2.5 seconds? (there is no power supply in this circuit)
B. A generator consists of one thousand loops of wire, each enclosing an area 90.cm^2, rotating 50. times per second in a uniform field of 0.15T. Write the EQUATION of the instantaneous voltage output as a function of time. Determine the value of effectvie output voltage (Erms)
C. Two long parallel wires carry currents of 20. A and 5.0 A in opposite directions. The wires are separated by 20. cm. What is the magnetic field midway between the two wires?