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Voltage Sources Quiz

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Questions and Answers

What is an ideal voltage source?

A two-terminal device that maintains a fixed voltage drop across its terminals (correct)

A device whose voltage across its terminals is determined by other variables in the circuit

A device that varies its voltage based on load resistance

A device that supplies unlimited current

How can an ideal voltage source be specified?

Independently of any other variable in a circuit (correct)

Dependently on the output current

Dependently on the impedance elements

Dependently on the load resistance

What is the dual of a voltage source?

Impedance source

Inductance source

Current source (correct)

Resistance source

How are real-world sources of electrical energy modeled for analysis purposes?

Combination of an ideal voltage source and additional combinations of impedance elements (A) Signup and view all the answers

Explain the difference between an independent current source and a dependent current source in an electronic circuit.

An independent current source delivers a constant current that is specified independently of any other variable in the circuit, while a dependent current source delivers a current which is proportional to some other voltage or current in the circuit. Signup and view all the answers

What is the main difference between an ideal voltage source and a real-world voltage source?

An ideal voltage source can maintain fixed voltage independent of load resistance or output current, while a real-world source cannot supply unlimited current (D) Signup and view all the answers

What is the schematic symbol for an ideal current source driving a resistive load?

The schematic symbol for an ideal current source driving a resistive load is a circle with an arrow pointing out from it, representing the direction of the constant current. Signup and view all the answers

Define an ideal current source and explain its behavior in a circuit.

An ideal current source generates a current that is independent of the voltage changes across it. It is a mathematical model, and if the current through it can be specified independently of any other variable in a circuit, it is called an independent current source. Signup and view all the answers

What is the term sometimes used for sources fed from a negative voltage supply?

The term sometimes used for sources fed from a negative voltage supply is 'current sink'. Signup and view all the answers

How are real devices related to the ideal current source model?

Real devices can approach the behavior of an ideal current source very closely, making it a useful mathematical model for analysis and design purposes. Signup and view all the answers