Analyze the circuit below using a QCV chart. You must show appropriate work for full credit. 2) Analyze the circuit below using a QCV chart. You must show appropriate work for full credit. 3) Analyze the circuit below using a QCV chart. You must show appropriate work for full credit. 4) An Oppo Digital Blu-Ray player [DMP-95] (Yes, I am an audiophile.) has a power cable which has a metal that allows 9 x 1019 electrons per cubic millimeter. On average, the cable passes 1 x 1022 electrons every hour. The electrons passing through the player have a drift velocity of 4.5 μm/s. (a) What current does the Oppo draw? (b) Calculate the diameter of the cable?

Analyze the circuit below using a QCV chart. You must
show appropriate work for full credit. 2) Analyze the circuit below using a QCV chart. You must
show appropriate work for full credit. 3) Analyze the circuit below using a QCV chart. You must
show appropriate work for full credit. 4)
An Oppo Digital Blu-Ray player [DMP-95] (Yes, I am an audiophile.) has a power cable which has a metal that allows 9 x 1019 electrons per cubic millimeter. On average, the cable passes 1 x 1022 electrons every hour. The electrons passing through the player have a drift velocity of 4.5 μm/s. (a) What current does the Oppo draw? (b) Calculate the diameter of the cable?
5) The Large Hadron Collider at CERN creates proton beams which collide together resulting in pictures like the one at the right. Some of these beams can have a radius of 1.1 mm with a current of 1.5 mA. The kinetic energy of each proton in this beam is 2.5 MeV. (a) Calculate the number density of the protons in the beam. (b) If the beam is aimed at a metal target, how many protons would strike the screen in 1 minute?
C2 = 15 μF C1 = 8 μF
20 V
C3 = 30 μF
6)
Two copper wires are soldered together. Wire #1 has a radius of 0.7 mm. Wire #2 has a radius of 1.2 mm. Copper has a number density of 8.47 x 1028 e–/m3. The drift velocity in Wire #1 is 0.72 mm/s. If you want the current to remain the same in both, what is the drift velocity in Wire #2?
7) A nichrome cable has a current of 140 A running through
it. Between two points on the cable that are 0.22 m apart, there is a potential difference of 0.036 V (a) Calculate the diameter of the cable. (b) How much heat energy does this part of the wire emit in 1 minute?
8) A “Rockstar” toaster uses a
tungsten heating element (wire). The wire has a diameter of 1.2 mm. When the toaster is turned on at 20° C, the initial current is 1.6 A. (a) What is the current density in the wire? (b) A few seconds later, the toaster heats up and the current is 1.20 A. What is the temperature of the wire? (c) If the toaster is plugged into a standard wall outlet in Kankakee, Illinois, what is the rate that energy is dissipated from the heating element?
9) Skid runs a 10 mile line of copper cable out to his shack in
the sticks so he can have electricity to play Lord of the Rings Online. At 20ºC the resistance of the cable is 12 Ω. At 50ºC the cable emits 1.5 kJ every second. (a) What is the resistance of the cable at 50ºC? (b) What is the current running through the cable at 50ºC? (c) Calculate the current density at 50ºC.
C1 = 18 μF
Wire #1 Wire #2 C2 = 6 μF
C3 = 4 μF
C4 = 30 μF 25 V
C1 = 5 μF C2 = 4 μF
C3 = 1 μF
C4 = 12 μF
15 V
10) A modern hair dryer uses a nichrome heating element that typically is 30-gauge wire around 40 cm in length. The gauge rating on a wire refers to its diameter. In this case, 30-gauge wire has a diameter of 0.254 mm. Nichrome has a number density of 7.94 x 1028 e–/m3. If the drift velocity of the electrons in the wire is 18.7 mm/s, what is the voltage that the hair dryer is plugged into?
11) Before LCD, LED, Plasma,
and (the latest) OLED TVs, there were CRT (Cathod-Ray Tube) TVs. Inside these TVs were electron guns that shot an electron beam of diameter 0.5 mm and current density of 244 A/m2 onto the inside of a glass screen which was coated with phosphor. How many electrons would hit the phosphor every minute?
12)
Determine the equivalent resistance between points A and B for the resistors shown in the circuit above.
13)
Determine the equivalent resistance between points A and B for the resistors shown in the circuit above.
14)
Determine the equivalent resistance between points A and B for the resistors shown in the circuit above.
15) Design a circuit that has an equivalent resistance of
1.00 Ω using at least one of each of the following resistors: a 1 Ω, a 2 Ω, and a 6 Ω. [You must also show where your A and B terminals are located.]