NCCER Electrical Level 1 Mod 4
Electrical Theory Exam Questions and
Answers
Which of the following is true regarding a series circuit? - Answer-The current flow is the
same through all resistors.
Which of the following is true regarding a parallel circuit? - Answer-It has more than one
path for current to flow.
Which of the following is true regarding a series-parallel circuit? - Answer-If a circuit is
reduced to an equivalent series circuit, the total resistance is found by adding the loads.
Two branches of a circuit (R1 and R2) across a 120V power line draw a total line
current of 30A. Branch R1 takes 15A. What is the current I2 in branch R2? - Answer-
15A
Who stated that the current entering a point must equal the total current leaving that
point? - Answer-Kirchoff
In a circuit with an applied voltage of 10V and voltage drops of E1 = 2V, E2 = 5V, and
E3 = ?, the value of E3 must be____________. - Answer-3V
You can use Ohm's law to find the value of each branch current in a parallel circuit. -
Answer-True
Find the total resistance in a series circuit with three resistances of 100Ω, 20Ω, and
30Ω. - Answer-60
In a parallel circuit, the voltage across each path is equal to the _____________. -
Answer-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 combination, the current through the 54Ω resistor
is ____________. - Answer-4.93A
A 242Ω resistor is in parallel with a 180Ω resistor, and a 420Ω resistor is in series with
the combination in a 27V circuit. A current of 22mA flows through the 242Ω resistor. The
current through the 180Ω resistor is _____________. - Answer-29.6mA
Which statement is not correct relative to Kirchhoff's current law? - Answer-Kirchhoff's
laws apply to current only.
Electrical Theory Exam Questions and
Answers
Which of the following is true regarding a series circuit? - Answer-The current flow is the
same through all resistors.
Which of the following is true regarding a parallel circuit? - Answer-It has more than one
path for current to flow.
Which of the following is true regarding a series-parallel circuit? - Answer-If a circuit is
reduced to an equivalent series circuit, the total resistance is found by adding the loads.
Two branches of a circuit (R1 and R2) across a 120V power line draw a total line
current of 30A. Branch R1 takes 15A. What is the current I2 in branch R2? - Answer-
15A
Who stated that the current entering a point must equal the total current leaving that
point? - Answer-Kirchoff
In a circuit with an applied voltage of 10V and voltage drops of E1 = 2V, E2 = 5V, and
E3 = ?, the value of E3 must be____________. - Answer-3V
You can use Ohm's law to find the value of each branch current in a parallel circuit. -
Answer-True
Find the total resistance in a series circuit with three resistances of 100Ω, 20Ω, and
30Ω. - Answer-60
In a parallel circuit, the voltage across each path is equal to the _____________. -
Answer-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 combination, the current through the 54Ω resistor
is ____________. - Answer-4.93A
A 242Ω resistor is in parallel with a 180Ω resistor, and a 420Ω resistor is in series with
the combination in a 27V circuit. A current of 22mA flows through the 242Ω resistor. The
current through the 180Ω resistor is _____________. - Answer-29.6mA
Which statement is not correct relative to Kirchhoff's current law? - Answer-Kirchhoff's
laws apply to current only.
