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Can there be zero current with voltage?
If you have ZERO volts then you don’t have a voltage therefore you have no current. The ohms law you quoted is not applicable for ZERO volts. When you DO have current flow, then SOMEWHERE there is a voltage that is not ZERO.
What happens to source voltage when current is zero?
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.
What does it mean when current is zero?
Current zero (CZ) refers to the interruption phenomena in high power circuit-breakers. Today it seems improbable that high voltage circuits could be interrupted economically by other means than the electric arc. The current zero phenomena is an indicator for the pressure, temperature, ion density, plasma flow, etc.
Why does the neutral wire have 0 volts?
So the voltage of the neutral wire is always zero… By definition. The reality is a little different. If you measure the voltage between any two points on a superconducting wire, you will measure zero volts no matter how much current is flowing, but the neutral wires in the power grid are not superconductors.
When does current exist when there is no voltage?
Current will flow as long as there is a difference in potential. In reality, if you wish to get into the physics, free electrons in copper are in constant motion. What we measure as current is the net movement of electrons in the bulk medium such as a block of copper. Ohm’s Law still applies. I = V/R
Why do zero volts have no current flow?
The problem you have created is to make up a ‘voltage’ for the common point. If you have ZERO volts then you don’t have a voltage therefore you have no current. The ohms law you quoted is not applicable for ZERO volts. When you DO have current flow, then SOMEWHERE there is a voltage that is not ZERO.
When is there no current and no ohm’s law?
Ohm’s law applies only for the current flow through a resistor and the voltage across it.When there is no current flow Ohm’s law is not at all applicable.Ohm’s law is not a relation between unrelated voltage and current. There is a difference between source voltage and voltage drop.( I am going to shock you all!
Can a voltage source in an open circuit with 0 current effect?
Can a voltage source in an open circuit with 0 current effect a circuit like so: So that current would be equal to what is outputted from V-1, yet the voltage is increased to 15V due to V-2? Because in this circuit voltage can increase even if it’s an open circuit: The clue to voltage is in it’s proper name: Potential Difference.