# Electric Circuit/ AC Theory

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Quizzes Created: 1 | Total Attempts: 393
Questions: 10 | Attempts: 393

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Random order question all about AC Theory

• 1.

### states that "in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop" which is also equal to zero.

Explanation
Kirchoff's Voltage Law states that in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop, which is also equal to zero. This means that the algebraic sum of the voltages in a closed loop is always zero. This law is based on the principle of conservation of energy, as it ensures that the energy supplied by the voltage source is equal to the energy consumed by the circuit elements.

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• 2.

### It is a closed loop conducting path in which an electrical current flows.

• A.

Node

• B.

Circuit

• C.

Path

B. Circuit
Explanation
A circuit is a closed loop conducting path in which an electrical current flows. It is a complete pathway for the flow of electrons from the source of energy to the load or device being powered. A circuit typically consists of various components such as resistors, capacitors, and inductors, connected in a way that allows the flow of current. The correct answer, "Circuit," accurately describes this concept.

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• 3.

### It is a line of connecting elements or sources with no elements or sources included more than once.

• A.

Node

• B.

Circuit

• C.

Path

C. Path
Explanation
A path refers to a line of connecting elements or sources, where no element or source is included more than once. This means that a path is a sequence of connected elements or sources that does not contain any repetition. It is different from a circuit, which can include repetition of elements or sources. A path represents a unique route or connection between elements or sources.

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• 4.

### By inspection on the oscilloscope Vpeak reads VA1= 10v and  time reads T2-T1 = 10 ms. what is the Voltage peak to peak?

• A.

20v

• B.

30v

• C.

40v

A. 20v
Explanation
The voltage peak to peak can be calculated by finding the difference between the maximum and minimum voltage values. In this case, since only the peak voltage (Vpeak) is given as 10v, and there is no mention of the minimum voltage, we can assume that the minimum voltage is 0v. Therefore, the voltage peak to peak would be equal to the peak voltage, which is 10v.

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• 5.

### states that the "total current or charge entering a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node".

• A.

True

• B.

False

A. True
Explanation
This statement is true because according to the principle of conservation of charge, charge cannot be created or destroyed. Therefore, the total current or charge entering a junction or node must be equal to the charge leaving the node, as there is no other place for the charge to go except to leave the node. This principle ensures that no charge is lost within the node.

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• 6.

### It is a single or group of components such as resistors or a source which are connected between two nodes.

• A.

Loop

• B.

Branch

• C.

Mesh

B. Branch
Explanation
A branch refers to a single or group of components, such as resistors or a source, that are connected between two nodes. In other words, it represents a pathway for current to flow through in an electrical circuit. A loop, on the other hand, refers to a closed path in a circuit that starts and ends at the same node, while a mesh refers to a closed loop that does not contain any other loops within it. Therefore, the given correct answer for this question is "Branch".

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• 7.

### _________________ states that the "total current or charge entering a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node".

Kirchoff's Current Law
Explanation
Kirchoff's Current Law states that the total current or charge entering a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node. This law is a fundamental principle in electrical circuit analysis and is used to determine the current flowing through different branches of a circuit. It is based on the principle of conservation of charge, which states that charge cannot be created or destroyed, only transferred or redistributed.

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• 8.

### It is a single open loop that does not have a closed path. No components are inside __________.

• A.

Loop

• B.

Branch

• C.

Mesh

C. Mesh
Explanation
A mesh refers to a closed loop in a circuit that has no branches or components inside it. In this case, the statement suggests that there is a single open loop in the circuit, meaning that it does not have any closed paths or branches. Therefore, the correct answer is "Mesh" as it accurately describes the absence of components inside the loop.

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• 9.

### It is a junction, connection or terminal within a circuit were two or more circuit elements are connected or joined together giving a connection point between two or more branches.

• A.

Node

• B.

Circuit

• C.

Path

A. Node
Explanation
A node is a point in a circuit where two or more circuit elements are connected or joined together. It acts as a junction or terminal, providing a connection point between two or more branches of the circuit.

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• 10.

### It is a simple closed path in a circuit in which no circuit element or node is encountered more than once.

• A.

Loop

• B.

Branch

• C.

Mesh

A. Loop
Explanation
A loop in a circuit refers to a closed path where no circuit element or node is encountered more than once. This means that as you travel along the loop, you will not encounter any repeated elements or nodes. It is important to note that a loop can contain multiple branches, but it is distinct from a branch, which refers to a single path between two nodes. Similarly, a mesh refers to a closed loop that includes multiple branches.

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