# Can a current source have zero voltage?

## Can a current source have zero voltage?

An independent current source with zero current is identical to an ideal open circuit. The voltage across an ideal current source is completely determined by the circuit it is connected to. When connected to a short circuit, there is zero voltage and thus zero power delivered.

### How do you construct a current source?

If you want to make the current source adjustable, you have 2 options. Being the load current is decided by the voltage or the resistance, you add a potentiometer to the voltage source or a potentiometer as the output resistor so that you can vary the current output.

#### Does a current source have resistance?

Thus, if an ideal current source is a 12mA current source, the load will receive the entire 12mA, without any being lost. Unlike an ideal voltage source that has zero internal resistance, an ideal current source has infinite internal resistance; this allows it to act as a 100% efficient source of current.

Does voltage cause current or does current cause voltage?

Relationship Between Voltage and Current Current and voltage are two fundamental quantities in electricity. Voltage is the cause and current is the effect.

What does 0 volts mean?

0v, or zero volts, a complete lack of voltage.

## What is an example of a current source?

The current source can be made by putting a very high resistance in series with a voltage source. Some examples of Current Sources are – Secondary current in a current transformer, Solar Panels, Semiconductor devices, etc.

### What is a ideal current source?

An ideal current source is by definition a two-terminal element with the property that the current flowing through the device is specified at every instant in time. This current does not depend on the voltage across the source.

#### Why the internal resistance of an ideal current source is zero?

The internal resistance of an ideal voltage source is zero; it is able to supply or absorb any amount of current. The current through an ideal voltage source is completely determined by the external circuit. When connected to an open circuit, there is zero current and thus zero power.

What is non ideal current source?

Non Ideal voltage source have some internal resistance in series. Whenever load connected some drop of voltage observed. Ideal current sorce internal resistance must be zero. Non ideal current source have some internal resistance in parallel.

Why current source is connected in parallel?

Current Source in Parallel Current sources of different values may be connected together in parallel. For example, one of 5 amps and one of 3 amps would combined to give a single current source of 8 amperes as the arrows representing the current source both point in the same direction.

## What is a a current source circuit?

A current source circuit is a circuit which can output a stable, steady current, without fluctuating much. So, for example, we may want a steady source of 10mA, in that case we need a current source of 10mA.

### How do I adjust the load current of a current source?

If you want to make the current source adjustable, you have 2 options. Being the load current is decided by the voltage or the resistance, you add a potentiometer to the voltage source or a potentiometer as the output resistor so that you can vary the current output. You just have to do the math and decide which will work.

#### What is the source circuit of an op amp?

Current Source Circuit. Since the output of the op amp is connected to the gate of the MOSFET, the voltage at the gate of the MOSFET changes if there are changes in the load current. If there is an increase in load current, the op amp outputs a higher voltage (remember this is a depletion-type MOSFET).

How do you read a 5mA MOSFET?

If you take an ammeter from a multimeter and put it in series on either the drain or source side of the MOSFET, you should read this value. And you should see that it doesn’t vary much from its baseline value of 5mA.

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