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Can a current source have zero voltage?
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. Over a given load range, it is possible for some types of real current sources to exhibit nearly infinite internal resistance.
Do voltage sources always deliver power?
Independent voltage sources supply a constant voltage that does not depend on any other quantity within the circuit. Note also that voltage sources are capable of both delivering or absorbing power.
Can voltage sources dissipate power?
Resistors with current through them dissipate power. The voltage dropped across it multiplied by the current gives power in the resistor. That power shows up as heat, and is dissipated by warming the environment.
Do voltage sources generate or dissipate power?
From another viewpoint, a current source (and a real voltage source with some internal resistance) always dissipates power in its internal resistor…
Is power dissipation same as power absorbed?
We say a component is dissipating or absorbing power when it is causing a loss in electrical poten- tial of the charge carriers going through it. An ideal example is where current traveling through a resistor causes a voltage drop to occur across its terminals. It dissipates power when it is being charged.
What is an ideal voltage source * 1 point?
An ideal voltage source is a two terminal device that maintains a fixed voltage drop across its terminals. Answer: The IDEAL VOLTAGE SOURCE is one, which has ZERO internal resistance or impedance, so that, whatever voltage has been generated at source can be made available to network at any length from the source!!!!
Can you have current without voltage and voltage without current?
3 Answers. Voltage, in the most physical way, is a scalar field that determines the potential energy per unit charge at every point in space. Now, you can’t have currents without voltages because if there’s a current there’s a charge moving, and every charge produces a voltage, but you can have currents without voltage differences in space.
Can a voltage source supply the same current as the original voltage?
For the remainder of the circuit, nothing has changed: These two voltage sources together provide the same voltage, and the same current as the original one alone. No real voltage source is ideal; all have a non-zero effective internal resistance, and none can supply unlimited current.
Can a voltage source maintain an unlimited current?
A voltage source is a two terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current. However, a real-world voltage source cannot supply unlimited current.
Is there such a thing as an ideal voltage source?
No real voltage source is ideal; all have a non-zero effective internal resistance, and none can supply unlimited current. However, the internal resistance of a real voltage source is effectively modeled in linear circuit analysis by combining a non-zero resistance in series with an ideal voltage source (a Thévenin equivalent circuit ).