Quizbank/Electricity and Magnetism (calculus based)/QBCh16

QB153086031104

QB:Ch 16:V1
QB153086031104 1) A parallel plate capacitor with a capicatnce C=3.80E-06 F whose plates have an area A=3.00E+03 m2 and separation d=7.10E-03 m is connected via a swith to a 78 &Omega; resistor and a battery of voltage V0=25 V as shown in the figure. The current starts to flow at time t=0 when the switch is closed. What is the magnitude of the displacement current at time t=1.30E-03?
 * a) 2.998E-03 A
 * b) 3.298E-03 A
 * c) 3.628E-03 A
 * d) 3.991E-03 A
 * e) 4.390E-03 A

2) A parallel plate capacitor with a capicatnce C=8.20E-06 F whose plates have an area A=6.20E+03 m2 and separation d=6.70E-03 m is connected via a swith to a 75 &Omega; resistor and a battery of voltage V0=17 V as shown in the figure. The current starts to flow at time t=0 when the switch is closed. What is the magnitude of the electric field at time t=6.50E-04?
 * a) 1.505E+03 V/m
 * b) 1.656E+03 V/m
 * c) 1.821E+03 V/m
 * d) 2.003E+03 V/m
 * e) 2.204E+03 V/m

3) A 58 kW radio transmitter on Earth sends it signal to a satellite 120 km away. At what distance in the same direction would the signal have the same maximum field strength if the transmitter's output power were increased to 88 kW?
 * a) 1.111E+02 km
 * b) 1.222E+02 km
 * c) 1.344E+02 km
 * d) 1.478E+02 km
 * e) 1.626E+02 km