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- (a) A defibrillator passes 12.0 A of current through the torso of a person for 0.0100 s. How much charge moves? (b) How many electrons pass through the wires connected to the patient? (See figure two problems earlier.)Which of the following is an installation requirement for the grounding electrode conductor in a communications system? A. It must be run as straight as practicable. B. It must be, at minimum, 4 AWG. C. It must be solid or stranded aluminum. D. It must be isolated and covered.1 Dimensional Analysis The SI unit of charge is the coulomb, denoted by the symbol C. The SI unit of current is the ampere, denoted by the symbol A. A current of one ampere delivers a charge of one coulomb every second: 1 A = 1C/s. The elementary charge is the charge of a single proton. It is defined to be exactly e = 1.602 176 634 x 10-19 C, where C denotes a coulomb, the SI unit of charge. (a) How long does it take for a current of 1 A to transport an the equivalent charge of 1 mol of protons? Report your result in seconds, hours, and days. (b) The clectric force between two charged objects is F =k9Q r2 F is the force, q and Q are electrical charges, and r is the distance between charges. What are the dimensions of the constant k, in terms of mass (M), length (L), time (T), and charge (Q)?
- C1. For the configuration of conductors depicted below, find the electrodynamic force F2 = ? developed in conductor 2, given: 1 2 3 4 I = 1000 A L=2m I4 I2 = 2500 A a = 2 cm Iz = 3000 A b=6 cm L I4 = 5000 A c = 4 cmThe amount of charge that passes through the filament of a certain light bulb in 2 seconds is 1.67 C. A. What is the current in the light bulb? B. What is the number of electrons that pass through the filament in one second?Select the correct expression to describe the electromotive force - e.m.f. a. The e.m.f. of a source is the work done per charge. b. The e.m.f. of a source is the force between current-carrying wires. c. The e.m.f. of a source is the force between interacting electric charges. d. The e.m.f of a source is equal to the potential difference between the terminals of the source.
- How long would it take for a net charge of 2.5 C to pass a location in a wire so as to produce a steady current of 5.0 mA? A. 6.0 seconds B. 6.0 x 10 seconds C. 5.00 x 102 seconds D. 5.00 x 103 seconds3. The two 10-cm-long parallel wires in the figure below are separated by 5.0 mm. For what value of the resistor R will the force between the two wires be 5.4 x 10- 5 N? 2.0 N R ww 9.0 V 10 cm 9.0 V 5.0 mmThe unit of electric current, the ampere, is equivalent to which of the following? a. V?Ω b. V/Ω c. Ω?m d. V/s
- In the figure, R1 = 30, R2= 62, and R3= 52. The current through Ih through R2is 4.00 A. Determine the following: 3. Voltage across the battery (8) R1 R2 R3Look at the different objects. Plastic straw Copper wire Rubber tube Toothpick Iron nall Safety pin Which list names all of the objects that are conductors of electricity? A. wire, nail, safety pin I B. straw, wire, nail C. wire, tube, toothpick D. straw, tube, toothpickFig. 4 P4- 10V ¡Ohm's law, power] a) In Fig. 4, what is the current in R₁? Ans. b) The current in R₂? Ans. 0.11 A c) The current on R₂? Ans. d) The voltage on R.? Ans. Ľ www R₁=200 0.06 A 3.4 V www R₁-200 0.17 A R₂=300 ww www e) the electric power on R₁? Ans. R₂=500 0.58 W