Series Circuits Questions and Answers

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Showing 10 of 21 questions
Q1
voltage control
  • A current control
  • B volume control
  • C divider control
Answer: Option B
Q2
If the resistance total in a series circuit doubles, current will:
  • A be the same
  • B be doubled
  • C reduce source voltage
  • D be halved
Answer: Option D
Q3
Power is defined as:
  • A the rate at which work is done
  • B work
  • C the conversion of energy
  • D joules
Answer: Option A
Q4
Kirchhoff’s voltage law states that:
  • A the sum of the voltage drops in a series circuit is equal to the total applied voltage
  • B the algebraic sum of the resistances is equal to the sum of the voltages
  • C the algebraic sum of the individual currents around a closed loop is zero
  • D the voltages developed across each element in a series circuit are identical
Answer: Option A
Q5
If series current doubles, then:
  • A resistance is halved
  • B voltage is doubled
  • C voltage is reduced
  • D resistance is doubled
Answer: Option A
Q6
A short circuit has:
  • A too much resistance
  • B no conductance
  • C no resistance
  • D low current
Answer: Option C
Q7
lohms, 470 ohms, and 3300 ohms are in series with a 25-volt source, what is the total circuit current?
  • A 210 mA
  • B 5.2 mA
  • C 4.7 mA
  • D .007 A
Answer: Option C
Q8
A string of resistors in a series circuit will:
  • A divide the source voltage in proportion to their values
  • B reduce the power to zero
  • C cause the current to divide
  • D increase the source voltage in proportion to the values
Answer: Option A
Q9
Given a series circuit containing resistors of different values, which statement is not true?
  • A The current through each resistor is the same.
  • B The sum of the voltage drops across each resistive element will be equal.
  • C The total resistance is the sum of the value of the resistors.
  • D The voltage drop across each resistor is the same.
Answer: Option D
Q10
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?
  • A 0 V
  • B 8 V
  • C 12 V
  • D 20 V
Answer: Option D

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