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Quiz about Basic Electrical Circuit Analysis I
Quiz about Basic Electrical Circuit Analysis I

Basic Electrical Circuit Analysis I Quiz


This quiz is about basic principles of electrical circuit analysis. These ideas would be learned in a beginning level circuit analysis class.

A multiple-choice quiz by SmilingFaces. Estimated time: 4 mins.
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Author
SmilingFaces
Time
4 mins
Type
Multiple Choice
Quiz #
139,121
Updated
Aug 02 22
# Qns
10
Difficulty
Average
Avg Score
6 / 10
Plays
5664
Last 3 plays: Guest 176 (2/10), davyandgoliath (7/10), Guest 131 (6/10).
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Question 1 of 10
1. Which of the following prefixes represents 10 raised to the power of -15? Hint


Question 2 of 10
2. Which of the following is a representation of an electric charge? Hint


Question 3 of 10
3. Which one of the following is an active element? Hint


Question 4 of 10
4. Which one of the following could be used to represent the units of conductance(G)? Hint


Question 5 of 10
5. What law is described by the following equation: Voltage(v) = Current(i) x Resistance(R). Hint


Question 6 of 10
6. Which one of the following equations could be used to calculate the power absorbed by a resistor? Hint


Question 7 of 10
7. If three resistors, R1=50.0 kOhm, R2=50.0 kOhm and R3=25.0 kOhm, are placed in parallel, what resistor (Re) could be used to represent an equivalent resistance? Hint


Question 8 of 10
8. If three resistors, R1=50.0 kOhm, R2=50.0 kOhm and R3=25.0 kOhm, are placed in series, what resistor (Re) could be used to represent an equivalent resistance? Hint


Question 9 of 10
9. What law is used when evaluating a circuit using the Node Voltage method? Hint


Question 10 of 10
10. What is the method of analyzing a circuit containing multiple independent sources by activating one source at a time? Hint



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Most Recent Scores
Oct 24 2024 : Guest 176: 2/10
Oct 09 2024 : davyandgoliath: 7/10
Sep 23 2024 : Guest 131: 6/10
Sep 22 2024 : Guest 125: 4/10
Sep 11 2024 : drwinsac: 6/10
Sep 08 2024 : Guest 165: 5/10
Sep 06 2024 : Guest 85: 0/10
Sep 04 2024 : Guest 174: 5/10
Sep 01 2024 : Guest 174: 5/10

Score Distribution

quiz
Quiz Answer Key and Fun Facts
1. Which of the following prefixes represents 10 raised to the power of -15?

Answer: femto(f)

The prefix, atto(a), is 10 raised to the power of -18; the prefix, pico(p), is 10 raised to the power of -12; and the prefix, deci(d), is 10 raised to the power of -1. In electrical circuit analysis, the circuit components of voltages, currents, resistances, conductances, etc. are very small; therefore, these prefixes are used quite often with units to describe the magnitude of the component.
2. Which of the following is a representation of an electric charge?

Answer: 3000 microcoulombs(C)

2A is the representation for current. 10V is the representation for voltage. 60W is the representation for power. The relationship of an electric charge to voltage, current and power can be represented by the following equations: 1) Voltage(v) = Change in Energy(dw) / Change in Charge(dq), 2) Current(i) = Change in Charge(dq) / Change in time(dt), 3) Power(p) = Change in Energy(dw) / Change in time(dt).
3. Which one of the following is an active element?

Answer: 10 V power supply

Active elements are electronic devices that can create energy (i.e. voltage supplies and current supplies). Passive elements are electronic devices that cannot create energy (i.e. resistors, capacitors, inductors).
4. Which one of the following could be used to represent the units of conductance(G)?

Answer: All of these

Conductance(G) is the inverse of resistance(R): G = 1/R. Siemens is an SI derived unit of measurement for electric conductance named after a German inventor, Werner von Siemens. Mho is a common convention used in professional literature. As you can see Mho is the reverse spelling of Ohm, the unit for resistance. Also, the Greek letter Omega is used as a unit for resistance; therefore, inverting it would make it the unit for conductance.
5. What law is described by the following equation: Voltage(v) = Current(i) x Resistance(R).

Answer: Ohm's Law

Ohm's law was established by a German physicist named George Simon Ohm (1789-1854). This law first appeared in a book written by Ohm titled "Die galvanische Kette, mathematisch bearbeitet" (1827). This law states that the potential difference (v) across an ideal conductor is proportional to the current (i) through it. The constant of proportionality is called the resistance (R).
6. Which one of the following equations could be used to calculate the power absorbed by a resistor?

Answer: All of these

The interesting information found in question 2 shows how power is related to voltage and current: p = dw/dt = dw/dq(v) x dq/dt(i). By using variations of Ohm's law (v=iR and i=v/R), the other two equations can also be formed.
7. If three resistors, R1=50.0 kOhm, R2=50.0 kOhm and R3=25.0 kOhm, are placed in parallel, what resistor (Re) could be used to represent an equivalent resistance?

Answer: 12.5 kOhm

Knowing that resistors in parallel all contain the same voltage, the following equation can be created using Ohm's law and Kirchhoff's current law: 1/Re = 1/R1 + 1/R2 + 1/R3. This equation could be further expanded if more resistors were added in parallel. The equation would then read 1/Re = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5 + ...
8. If three resistors, R1=50.0 kOhm, R2=50.0 kOhm and R3=25.0 kOhm, are placed in series, what resistor (Re) could be used to represent an equivalent resistance?

Answer: 125.0 kOhm

Knowing that resistors in series all contain the same current, the following equation could be created using Ohm's law and Kirchoff's voltage law: Re = R1 + R2 + R3. The equation could be further expanded if more resistors were added in series. The equation would then read Re = R1 + R2 + R3 + R4 + R5 + ...
9. What law is used when evaluating a circuit using the Node Voltage method?

Answer: Kirchhoff's Current Law

The Node Voltage method is a technique used in solving linear circuits by using Ohm's law and Kirchoff's current law. Kirchhoff's current law states that the sum of all the currents at any node in a circuit equals zero. This law as well as Kirchhoff's voltage law was published in a paper in 1848 by a German physicist, Gustav Robert Kirchhoff (1824-1887).

This law describes the constraints of the relationship between voltages and currents in a circuit.
10. What is the method of analyzing a circuit containing multiple independent sources by activating one source at a time?

Answer: Superposition

The principle of superposition is a method that allows a person to activate each source one at a time and sum the resulting voltages or currents to determine the voltages or currents when all the sources are active.
Thevenin and Norton equivalence is the process by which a circuit is replaced with a voltage source and series resistor (Thevenin) or a current source and parallel resistor (Norton).
Source transformation is the process by which a Thevenin equivalent circuit is transformed into a Norton equivalent circuit.
Source: Author SmilingFaces

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