Can a current source have a voltage across it?
A current source can certainly have a voltage across it. If the voltage across a current source is zero, then it is not delivering or absorbing any power. However, if the voltage across the source is not zero, then it is either sourcing or sinking power into the rest of the circuit.
Why is there no voltage across wire?
Across the wire, there is no imbalance of electrons, and therefore there is no electric potential energy, and thus no voltage.
Why ideal voltage source is not possible?
Although ideal voltage sources are impossible to make because all types have some internal resistance, the closer we can get a voltage source to ideal conditions, the more efficient the source will be in supplying voltage with little power waste.
Does a current source drop voltage?
We remember that for an ideal source current, RP is infinite as there is no internal resistance, therefore the terminal voltage will be zero as there is no voltage drop.
What is the voltage across a voltage source?
The voltage across an ideal voltage source is independent of the current flowing through it. An ideal voltage source can be defined by an equation like this: v = V v = \text V v=Vv, equals, start text, V, end text, for example: v = 1.5 V v = 1.5\,\text V v=1.
Why is voltage the same in a wire?
There is a wire between 1 and 2. That means the resistance is zero or disregardable. Therefore, the current will go from 1 to 2 freely and the voltage will stay the same.
Is voltage the same at all points in a circuit?
The voltage at any point in a circuit is always measured with respect to a common point, generally 0V. For electrical circuits, the earth or ground potential is usually taken to be at zero volts ( 0V ) and everything is referenced to that common point in a circuit.
Why current source does not exist?
Define “exist”. Of course, the perfect current source does not exist, because that would require it to produce infinitely high voltage in cases where the effective resistance across its terminal approaches infinity (i.e. if the source is left “unconnected”); infinite voltage doesn’t exist.
How do you change a voltage source to a current source?
To transform the circuit, change the current source to a voltage source and move R so that it’s connected in series rather than in parallel. When you use the constraint equation vs = isR to find the source voltage, remember that R is the resistor you moved.
Why voltage source is short circuited and current source is open circuited?
The V s k of s is equal to zero, so these voltage sources are replaced by short circuits. It’s equivalent to short circuit because its voltage is equal to zero. It is an open circuit because the current source strength is reduced to zero.
What is voltage source and current source?
A Source is a device which converts mechanical, chemical, thermal or some other form of energy into electrical energy. A voltage source has a forcing function of emf whereas the current source has a forcing function of current. …
A current source can certainly have a voltage across it. If the voltage across a current source is zero, then it is not delivering or absorbing any power. However, if the voltage across the source is not zero, then it is either sourcing or sinking power into the rest of the circuit. Think of an extremely simple circuit:
Is there such a thing as an ideal current source?
\\$\\begingroup\\$. Yes. An ideal current source is a device that always produces the given current regardless of what voltage is applied across it. A device that always has 0 V across it is called a 0 V voltage source, or, less formally, a short circuit.
What is the difference between an ideal voltage and an ideal current?
An ideal current source will produce ANY amount of voltage required to maintain its specified current. So never open circuit an ideal current source An ideal voltage source will produce ANY amount of current required to maintain its specified potential difference. So never short circuit an ideal voltage source
What is a 0 V voltage source?
A device that always has 0 V across it is called a 0 V voltage source, or, less formally, a short circuit. Thanks for contributing an answer to Electrical Engineering Stack Exchange!