MALVINO CHAP 1

通報

問題一覧

An ideal voltage source has

Zero internal resistance

A real voltage source has

A small internal resistance

If a load resistance is 1 kohm, a stiff voltage source has a resistance of

Less than 10 ohm

An ideal current source has

Infinite internal resistance

A real current source has

A large internal resistance

If a load resistance is 1 kohm, a stiff current source has a resistance of

More than 100 kohm

The Thevenin voltage is the same as the

Open-load voltage

The Thevenin resistance is equal in value to the

Internal resistance of a Norton circuit

To get the Thevenin voltage, you have to

Open the load resistor

To get the Norton current, you have to

Short the load resistor

The Norton current is sometimes called the

Shorted-load current

A solder bridge

may produce a short

A cold-solder joint

usually produces an open

An open resistor has

Zero current through it

A shorted resistor has

Zero voltage across it

An ideal voltage source and an internal resistance is an example of the

Second approximation

Treating a connecting wire as a conductor with zero resistance is an example of the

Ideal approximation

The voltage out of an ideal voltage source

Is constant

The current out of an ideal current source

Is constant

Thevenin’s theorem replaces a complicated circuit facing a load by an

Ideal voltage source and series resistor

Norton’s theorem replaces a complicated circuit facing a load by an

Ideal current source and parallel resistor

One way to short a device is

With a solder bridge

Derivations are

Produced by mathematics

Laws are proved by

Experiment

Definitions are

All of the above

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