Question 1

To use Kirchhoff's law, start at some point and add the voltage drops around any _____ loop.

Accepted Answer

Kirchhoff's law is used to analyze circuits that have closed loops. Therefore, the correct choice is "closed."

Question 2

The _______________ theorem is used to find the current flow through any branch of a circuit containing more than one power source.

Accepted Answer

superposition

Question 3

Circuit networks can be reduced to a single current source and a single parallel resistance. This conversion is done in accordance with _____.

Accepted Answer

Norton's theorem states that any linear electrical network with voltage and current sources and only resistances can be replaced at terminals A-B by an equivalent current source in parallel connection with an equivalent resistance.

Question 4

What law states that the algebraic sum of the voltage sources and voltage drops in a closed circuit must equal zero?

Accepted Answer

Kirchhoff's voltage law states that the algebraic sum of the voltage sources and voltage drops in a closed circuit must equal zero.

Question 5

In a circuit, three wires form a junction. The currents in two of the wires are 5 A and 12 A. The current in the other wire is _____.

Accepted Answer

According to the principle of conservation of charge, the total current entering a junction must equal the total current leaving the junction. Therefore, if 5 A and 12 A are entering or leaving, the third wire must carry either the sum (17 A) if it's leaving alone or the difference (7 A) if it's entering against the other two.

Question 6

Write Kirchhoff's two laws dealing with voltage and current relationships in an electrical circuit.

Accepted Answer

The answer of Write Kirchhoff's two laws dealing with voltage...

Question 7

The current in any branch of a circuit supplied by a multipower source can be determined by finding the current produced in that particular branch by each of the individual power sources acting alone. This simplification is done in accordance with _____.

Accepted Answer

The described method is a direct application of the superposition theorem, which states that the total response of a linear circuit with multiple sources can be found by summing the individual responses of each source acting alone. Thevenin's and Norton's theorems are useful for simplifying circuits in certain cases, but do not directly apply to determining currents in individual branches. Kirchhoff's laws are fundamental principles used in analyzing circuits, but do not provide a simplification method for multi-source circuits.

Question 8

What law states that the algebraic sum of the currents entering and leaving a point must equal zero?

Accepted Answer

Kirchhoff's current law states that the sum of the currents entering and leaving a point (or node) in a circuit must be equal to zero.

Question 9

Before determining the algebraic sum of voltages using Kirchhoff's voltage law, you must first determine which end of the _______________ element is positive and which is negative.

Accepted Answer

The answer of Before determining the algebraic sum of voltages...

Question 10

Circuit networks can be simplified down to an equivalent circuit, with a single voltage source and series resistor. This conversion is done in accordance with _____.

Accepted Answer

Thevenin's theorem is used to simplify a circuit network down to an equivalent circuit with a single voltage source and series resistor.

Quiz 9: Kirchhoff S Laws Thevenin S Norton S and Superposition Theorems