NCCER Electrical Level 1 Mod 4 Electrical Theory | QUESTIONS AND
ANSWERS | VERIFIED ANSWERS (100% CORRECT) | LATEST EXAM
UPDATE
Which of the following is true regarding a series circuit? - CORRECT ANSWER
- The current flow is the same through all resistors.
Which of the following is true regarding a parallel circuit? - CORRECT
ANSWER - It has more than one path for current to flow.
Which of the following is true regarding a series-parallel circuit? - CORRECT
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? -
CORRECT ANSWER - 15A
Who stated that the current entering a point must equal the total current leaving
that point? - CORRECT 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____________. - CORRECT ANSWER - 3V
You can use Ohm's law to find the value of each branch current in a parallel circuit.
- CORRECT ANSWER - True
, Find the total resistance in a series circuit with three resistances of 100Ω, 20Ω, and
30Ω. - CORRECT ANSWER - 60
In a parallel circuit, the voltage across each path is equal to the _____________. -
CORRECT 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 ____________. - CORRECT 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 _____________. - CORRECT
ANSWER - 29.6mA
Which statement is not correct relative to Kirchhoff's current law? - CORRECT
ANSWER - Kirchhoff's laws apply to current only.
Kirchhoff's voltage law states that the algebraic sum of the voltages around any
closed current path is ________. - CORRECT ANSWER - 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 ____________. - CORRECT ANSWER - 60.5V
What is the total resistance of three resistors in parallel with values of 2 ohms, 8
ohms, and 14 ohms? - CORRECT ANSWER - 1.44ohms
ANSWERS | VERIFIED ANSWERS (100% CORRECT) | LATEST EXAM
UPDATE
Which of the following is true regarding a series circuit? - CORRECT ANSWER
- The current flow is the same through all resistors.
Which of the following is true regarding a parallel circuit? - CORRECT
ANSWER - It has more than one path for current to flow.
Which of the following is true regarding a series-parallel circuit? - CORRECT
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? -
CORRECT ANSWER - 15A
Who stated that the current entering a point must equal the total current leaving
that point? - CORRECT 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____________. - CORRECT ANSWER - 3V
You can use Ohm's law to find the value of each branch current in a parallel circuit.
- CORRECT ANSWER - True
, Find the total resistance in a series circuit with three resistances of 100Ω, 20Ω, and
30Ω. - CORRECT ANSWER - 60
In a parallel circuit, the voltage across each path is equal to the _____________. -
CORRECT 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 ____________. - CORRECT 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 _____________. - CORRECT
ANSWER - 29.6mA
Which statement is not correct relative to Kirchhoff's current law? - CORRECT
ANSWER - Kirchhoff's laws apply to current only.
Kirchhoff's voltage law states that the algebraic sum of the voltages around any
closed current path is ________. - CORRECT ANSWER - 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 ____________. - CORRECT ANSWER - 60.5V
What is the total resistance of three resistors in parallel with values of 2 ohms, 8
ohms, and 14 ohms? - CORRECT ANSWER - 1.44ohms
