If there is no current flowing out of the battery, ohm law says that there is no voltage drop in R1. Thus the output voltage of the battery is V0: the nominal voltage of your battery. You are talking about a "singularity" here ...
For e.g. a battery there is voltage even it is not connected anywhere. Thus voltage (Potential difference between two points) exists without current (flow of charge with respect to time) but current doesn't exist without voltage . I was waiting for somebody to give this answer.
If the voltage is absent, those electrons cannot move between points in a circuit, which means that the current does not exist. However, the voltage is still present because you have a circuit with points whose electrical potential varies. Just look at a pack of batteries. A current cannot flow unless those batteries are introduced to a circuit.
Physical voltage sources, such as a 1.5V battery, cannot supply unlimited current and, in fact, produce a finite current when short-circuited. So, we typically model a physical battery by placing a resistor in series with the voltage source. But this is the topic of another question. The battery voltage is defined by its chemistry.
A current cannot flow unless those batteries are introduced to a circuit. And yet, before you add those batteries to a circuit, a difference in electrical potential exists between the terminals. Therefore, you still have voltage. That doesn’t include situations that involve superconductors which are a special case.
By far the best explanation of Voltage & Current. For e.g. a battery there is voltage even it is not connected anywhere. Thus voltage (Potential difference between two points) exists without current (flow of charge with respect to time) but current doesn't exist without voltage .
The terminal voltage (V_{terminal}) of a battery is voltage measured across the terminals of the battery when there is no load connected to the terminal. An ideal battery is an emf source that …
b. When the switch is open, no current is flowing at all (we assume the voltmeter is ideal, so it has infinite resistance and no current will flow through it), so there is no voltage …
There is no minimum 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.
The voltage across the (ideal) battery is independent of the current through. That is to say, the battery is not an ohmic device and thus, does not ''obey'' Ohm''s law. In other words, the voltage across the (non-zero) …
Key Takeaways Key Points. A simple circuit consists of a voltage source and a resistor. Ohm ''s law gives the relationship between current I, voltage V, and resistance R in a simple circuit: I = V/R.; The SI unit for measuring the rate of …
The battery has internal resistance that is not shown and the voltage is "lost" across that so the external battery voltage reads as 0V. At least, close to 0V as there is the 1R …
There is no minimum 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 …
Can some battery have enough voltage but not deliver the required current? How is this possible? My question comes from car batteries but it is not limited to automotive.
In addition to the chemical reaction, higher-voltage batteries like a 12V battery have multiple cells in series to increase the voltage. A single AAA battery is only one cell, …
If the wire is connected to a 1.5-volt battery, how much current flows through the wire? The current can be found from Ohm''s Law, V = IR. The V is the battery voltage, so if R can be …
Sitting there not connected to the car and voltage dropping like a rock without even applying a load such as a radio or park lamps. Went through this just a month or so ago …
The chart helps determine if the battery has enough power to start the car and keep it running. For instance, if the voltage falls between 10.5 and 11.0 volts, the battery is …
There can be voltage without a current; for instance if you have a single charge, that charge induces a voltage in space, even if it''s empty. Voltage, in the most physical way, is a scalar …
In an ideal battery, there is no internal resistance to lose voltage across, so, the voltage cannot change and is always the nominal one. But that is ideal behavior. Like a …
The current ($I$) trough your am-meter and the potential difference ($V$) across it are related by Ohm''s law: $$V=RI$$ That means, for any current $I$ you have a small …
If there is no current flowing out of the battery, ohm law says that there is no voltage drop in R1. Thus the output voltage of the battery is V0: the nominal voltage of your …
Any current they have will persist in the absence of voltage. In other words, the current can exist without voltage. Superconductors can maintain currents for years.
If the wire (or whatever you use to make the short circuit), has zero resistance, then placing a volt meter across the battery terminals will show no voltage, although a current …
A battery can have voltage but no current when it is not connected to a circuit. Voltage, measured in volts, is a measure of the electric potential difference between two points in a circuit. ...
Thus a motorcycle battery and a car battery can both have the same voltage (more precisely, the same potential difference between battery terminals), yet one stores much more energy than the other. The car battery can move more …
The voltage across the (ideal) battery is independent of the current through. That is to say, the battery is not an ohmic device and thus, does not ''obey'' Ohm''s law. In other …
No, voltage is not potential energy. The trouble is with that "unit charge" bit at the end. Voltage can exist without any "unit charge" being present, and without any P.E. being …