Question 91
In basic electrical theory, voltage is best described as:
Question 92
In a simple series circuit with one source and three resistors, how does the current in each resistor compare?
Question 93
In a parallel circuit, how does the voltage across each branch compare to the source voltage?
Question 94
In a simple series circuit with one 12 V battery and one lamp, what happens to the current if the resistance of the lamp increases?
Question 95
A 20 A, 120 V branch circuit supplies four equal resistive loads connected in parallel. If the total current on the circuit is 16 A, what is the current through each individual load?
Question 96
Two 60 W, 120 V incandescent lamps are connected in series across 120 V. What is the effect on each lamp compared to normal operation?
Question 97
Which electrical quantity is measured in amperes (amps)?
Question 98
In a simple series circuit, if one lamp fails open, what happens to the current in the rest of the circuit?
Question 99
On a large commercial drawing set, which sheet type typically contains the power and lighting plans electrical workers rely on?
Question 100
In a simple series circuit with one 120 V source and two resistive loads, what is true about the current through each load?
Question 101
Two identical 24 ohm resistive heaters are connected in parallel on a 120 V branch circuit. Approximately what total current will they draw?
Question 102
What is the primary danger an Arc-Fault Circuit Interrupter (AFCI) is designed to protect against?
Question 103
A $120\text{ V}$ circuit has a total resistance of $8 \Omega$. A journeyperson connects a second $8 \Omega$ resistance in **parallel** with the first load. What is the new total circuit current?
Question 104
When using a digital multimeter (DMM) to measure current, the meter must be connected in what manner relative to the load?
Question 105
A $120\text{ V}$ circuit is protected by a $20 \text{ A}$ breaker. The total resistive load is $10 \Omega$. An additional appliance is connected with a resistance of $5 \Omega$ in **parallel**. Will the circuit breaker trip immediately, assuming it trips at $21 \text{ A}$?
Question 106
A parallel circuit has three resistive loads: $R_1 = 12 \Omega$, $R_2 = 12 \Omega$, and $R_3 = 12 \Omega$. What is the total equivalent resistance ($R_{EQ}$) of the circuit?
Question 107
A parallel circuit has three resistive loads: $R_1 = 5 \Omega$, $R_2 = 10 \Omega$, and $R_3 = 20 \Omega$. What is the total equivalent resistance ($R_{EQ}$) of the circuit?
Question 108
In a series-parallel circuit, three $15 \Omega$ resistors are connected in parallel, and this parallel group is connected in series with a $10 \Omega$ resistor. If the voltage source is $120 \text{ V}$, what is the total current ($I_T$)?
Question 109
Which of the following is the most accurate statement regarding the current (I) in a parallel circuit?
Question 110
Which of the following is the most accurate statement regarding the voltage (V) in a series circuit?
Question 111
In a simple series circuit with three identical lamps, what happens to the brightness of each lamp when the circuit is operating normally?
Question 112
Two 12 Ω resistors are connected in parallel across a 120 V source. What is the total current drawn from the source?
Question 113
What is the main difference between a series and a parallel circuit?
Question 114
Two 60 W, 120 V incandescent lamps are connected in parallel on a 120 V branch circuit. What is the total current drawn by both lamps together?
Question 115
What is the unit of electrical current?
Question 116
If a simple series circuit has one lamp burned out, what will happen to the other lamps in that same series circuit?
Question 117
A 120 V circuit supplies three resistive loads in parallel: 12 Ω, 24 Ω, and 48 Ω. Approximately what is the total circuit current?
Question 118
Which statement best describes current in a simple series circuit with several resistive loads?
Question 119
In a parallel circuit with three resistive loads connected across 120 V, which statement is true about the voltage across each load?
Question 120
Which electrical quantity is measured in amperes?