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MCQs

Total Questions : 162 | Page 14 of 17 pages
Question 131.  
If three resistors of 1.5 kilohms, 470 ohms, and 3300 ohms are in series with a 25-volt source, what is the total circuit current?
  1.    210 mA
  2.    5.2 mA
  3.    4.7 mA
  4.    .007 A
 Discuss Question
Answer: Option C. -> 4.7 mA
Question 132. . A string of resistors in a series circuit will:
  1.    divide the source voltage in proportion to their values
  2.    reduce the power to zero
  3.    cause the current to divide
  4.    increase the source voltage in proportion to the values
 Discuss Question
Answer: Option A. -> divide the source voltage in proportion to their values
Question 133. . Given a series circuit containing resistors of different values, which statement is not true?
  1.    The current through each resistor is the same.
  2.    The sum of the voltage drops across each resistive element will be equal to source voltage.
  3.    The total resistance is the sum of the value of the resistors.
  4.    The voltage drop across each resistor is the same.
 Discuss Question
Answer: Option D. -> The voltage drop across each resistor is the same.
Question 134. . With 20 V applied, an 8-ohm resistor is in series with a lamp. When the lamp is removed, what voltage will be read across the lamp socket?
  1.    0 V
  2.    8 V
  3.    12 V
  4.    20 V
 Discuss Question
Answer: Option D. -> 20 V
Question 135. . A series circuit current:
  1.    remains the same through each component
  2.    is the same as the individual resistances
  3.    is subtracted by each component
  4.    varies through each component
 Discuss Question
Answer: Option A. -> remains the same through each component
Question 136. . In a series circuit, the voltage measured across a short will be:
  1.    source voltage
  2.    infinite voltage
  3.    zero volts
  4.    the normal voltage drop
 Discuss Question
Answer: Option C. -> zero volts
Question 137. . Resistance in a series circuit will:
  1.    control the voltage
  2.    double the current
  3.    halve the power
  4.    oppose current
 Discuss Question
Answer: Option D. -> oppose current
Question 138. . If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?
  1.    11 V
  2.    16 V
  3.    21 V
  4.    80 V
 Discuss Question
Answer: Option A. -> 11 V
Question 139. . The voltage drop across a series resistor is proportional to what other value?
  1.    total resistance
  2.    its own resistance
  3.    wattage rating
  4.    the amount of time the circuit is on
 Discuss Question
Answer: Option B. -> its own resistance
Question 140. . How will an open resistor affect a series circuit?
  1.    Current will flow around the open resistor.
  2.    The open resistor will drop 0 V.
  3.    Total resistance will decrease.
  4.    No current will flow in the circuit.
 Discuss Question
Answer: Option D. -> No current will flow in the circuit.

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