Question 61
On a simple circuit schematic, what does a symbol of two parallel lines of unequal length typically represent?
Question 62
In a simple series circuit, what happens to current flow if one lamp fails open?
Question 63
Two 12 Ω resistive loads are connected in parallel across a 120 V supply. What is the total current drawn by the circuit?
Question 64
In a simple series circuit, what happens to total resistance when additional resistors are added in series?
Question 65
In a simple series circuit, how is the current related at different points in the circuit?
Question 66
What is the unit of electrical current in the SI system?
Question 67
On a 120 V lighting circuit, several fixtures go dark when one lamp burns out. What does this most likely indicate about how the fixtures are wired?
Question 68
In a simple series circuit, what happens to the current if you add another resistor in series while keeping the voltage the same?
Question 69
In a simple series circuit with one 120 V source and a single resistive lamp load, how is the current through the circuit best described?
Question 70
On a residential electrical plan, which symbol most commonly represents a duplex receptacle outlet?
Question 71
What happens to the total resistance when an additional resistor is added in parallel to an existing parallel circuit?
Question 72
When installing a motor starter with an overload relay, where are the overload contacts typically connected in the control circuit?
Question 73
On a residential electrical blueprint, which symbol most commonly represents a standard duplex receptacle?
Question 74
Which basic electrical quantity is measured in amperes?
Question 75
In a simple series circuit, what happens to the current when an additional resistor is added in series?
Question 76
Two 60 W, 120 V lamps are connected in parallel on a 120 V circuit. What is the total current drawn by both lamps?
Question 77
Which term describes the force that pushes current through an electrical circuit?
Question 78
On a typical architectural electrical plan, which symbol usually represents a standard duplex receptacle?
Question 79
Two identical light fixtures are connected in parallel on a 120 V circuit. If one lamp burns out, what happens to the other lamp?
Question 80
A 120 V branch circuit feeds two resistive loads in parallel: one draws 6 A and the other draws 4 A. Assuming no other loads, what is the total current at the panel breaker?
Question 81
In a simple series circuit, how does the current compare at different points in the circuit?
Question 82
Which symbol on a residential electrical plan most commonly represents a standard duplex receptacle?
Question 83
Which best describes a parallel circuit?
Question 84
In a 120 V branch circuit, two resistors of 10 Ω and 20 Ω are connected in parallel. What is the total resistance of the combination?
Question 85
A 120 V supply feeds a series-parallel network: a 10 Ω resistor is in series with two 20 Ω resistors that are connected in parallel with each other. What is the total resistance of the circuit?
Question 86
In a basic series circuit, what happens to the total resistance when another resistor is added in series?
Question 87
A simple parallel circuit has two identical lamps connected across 120 V. If one lamp burns out (opens), what happens to the other lamp?
Question 88
In a simple series circuit, how is the current through each component related?
Question 89
Two 20 Ω resistors are connected in parallel across a 120 V supply. What is the total resistance of the circuit?
Question 90
Which of the following best describes parallel circuits?