NCCER PRACTICE EXAM PT 4

In a parallel circuit, the voltage across each path is equal to the _____.

• applied voltage

• source voltage minus path voltage

• total circuit resistance times path current

• path resistance times total current

Which of the following is true regarding a series circuit?

• The current flow varies depending on the strength of the resistor.

• The current flow through the resistors is always lower than the source current.

• It has more than one path for current flow.

• The current flow is the same through all resistors.

Kirchhoff's current law states that _____.

• only Ohm’s law can be used to solve for unknown circuit values

• the total line current must be less than the sum of the branch currents

• the total current entering a point must equal the total current leaving a point

• the line current is always twice the sum of the branch currents

The total resistance in Figure RQ01 is _____.

Evaluate responses using AI:

OFF

Kirchhoff's voltage law states that the algebraic sum of the voltages around any closed current path is ____.

• infinity

• zero

• twice the current

• less than the individual voltages

Find the total resistance in a series circuit with three resistances of 10Ω, 20Ω, and 30Ω.

• 20Ω

• 60Ω

• 15Ω

• 1Ω

Find the unknown voltage drop for E3 in a circuit with an applied voltage of 10V and voltage drops of E1 = 2V and E2 = 5V.

• 3V

• 7V

• 17V

• 12V

In residential wiring, the colors used for the ungrounded conductor identification are and , with being the lead conductor

In residential wiring, the color used to identify the neutral, or return conductor in the circuit is

The color is used to identify the equipment grounding conductor.