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Total Questions : 71 | Page 7 of 8 pages
Question 61. A current of 200 µA through a 6.8 k resistor produces a voltage drop of
  1.    340 V
  2.    34.4 V
  3.    1.36 V
  4.    13.6 V
 Discuss Question
Answer: Option C. -> 1.36 V
Question 62. When 12 V are applied across a 68 resistor, the current is
  1.    816 mA
  2.    17.6 mA
  3.    8.16 mA
  4.    176 mA
 Discuss Question
Answer: Option D. -> 176 mA
Question 63. Approximately how much current flows through a 3.3 M resistor across a 30 V source?
  1.    900 A
  2.    9 A
  3.    90 A
  4.    9000 A
 Discuss Question
Answer: Option B. -> 9 A
Question 64. A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.
  1.    2
  2.    20
  3.    40
  4.    4
 Discuss Question
Answer: Option B. -> 20
Question 65. What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?
  1.    8.2 k
  2.    82
  3.    820
  4.    8.2
 Discuss Question
Answer: Option B. -> 82
Question 66. What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing?
  1.    6.6
  2.    18.3
  3.    183
  4.    66
 Discuss Question
Answer: Option C. -> 183
Question 67. An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately
  1.    31
  2.    385
  3.    3.1
  4.    38.5
 Discuss Question
Answer: Option A. -> 31
Question 68. A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
  1.    214 mA
  2.    21.4 mA
  3.    2.2 mA
  4.    2 mA
 Discuss Question
Answer: Option C. -> 2.2 mA
Question 69. If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor?
  1.    82.5 V
  2.    8.25 V
  3.    14.6 V
  4.    146 V
 Discuss Question
Answer: Option B. -> 8.25 V
Question 70. Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?
  1.    5.9 mA
  2.    59 mA
  3.    590 mA
  4.    27.2 mA
 Discuss Question
Answer: Option A. -> 5.9 mA

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