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Electrical Theory Module ID 40203-08 RATED A
Typology: Exams
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An electrical circuit contains, at minimum, a(n) _________. A. voltage source, load, and switch B. ammeter, load, and voltage source C. voltage source, load, and conductors D. conductor, switch, and load - correct answer ✅C. voltage source, load, and conductors A type of subatomic particle with a positive charge is a(n) ___________. A. proton B. neutron C. electron D. nucleus - correct answer ✅A. proton which of the following substance considered an insulator? A. Gold B. Copper C. Silver D. Porcelain - correct answer ✅D. Porcelain The voltage commonly supplied to a resistance by the local utility is ___________. A. 120V B. 240V C. 480V
D. 208V - correct answer ✅B. 240V Another term used for voltage is _________. A. emf B. coulomb C. current D. joule - correct answer ✅A. emf In order to calculate the current flowing in a circuit, you would multiply voltage by resistance. A. True B. False - correct answer ✅B. False The color band that represents tolerance on a resistor is the _________ band. A. 1st B. 2nd C. 3rd D. 4th - correct answer ✅D. 4th In a parallel circuit, the total resistance is _______ the smallest resistance. A. greater than B. equal to C. less than - correct answer ✅C. less than
A. Rt = R1 + R2 + R B. Rt = R1 - R2 - R C. Rt = R1 x R2 x R D. 1/(1/R1 + 1/R2 + 1/R3) - correct answer ✅D. 1/(1/R1 + 1/R2 + 1/R3) Find the total resistance in a series circuit with three resistance of 10Ω, 20Ω, and 30Ω. A. 1Ω B. 15Ω C. 20Ω D. 60Ω - correct answer ✅D. 60Ω In a parallel circuit, the voltage across each path is equal to the _________. A. total circuit resistance times path current B. source voltage minus path voltage C. path resistance time total current D. applied voltage - correct answer ✅D. applied voltage A resistor of 32Ω is in parallel with a resistor of 36Ω, and a 54Ω resistor is in series with the pair. When 350V is applied to the commination, the current through the 54Ω resistor is _____ amps. A. 2. B. 3.
D. 5.86 - correct answer ✅C. 4. A 242Ω resistor is in parallel with a 180Ω resistor, and a 420Ω resistor is in series with the combination in a 50V circuit. A current of 22mA flows through the 242Ω resistor. The current through the 180Ω resistor is ___________mA A. 36. B. 59. C. 60. D. 73.6 - correct answer ✅D. 73. Kirchhoff's voltage law states that the algebraic sum of the voltage around any closed current path is ________. A. infinity B. zero C. twice the current D. always less than the individual voltage due to voltage drop - correct answer ✅B. zero Two 24Ω resistors are in parallel, and a 42Ω resistor is in series with the combination. When 78V is applied to the three resistors, the voltage drop across the 42Ω resistor is about _______ voltage. A. 49. B. 55. C. 60.