Thus voltage Potential difference between two points exists without current flow of charge with respect to time but current doesn't exist without voltage. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Current without Voltage and Voltage without Current? Ask Question. Asked 8 years, 9 months ago. Active 1 year, 4 months ago. Viewed k times. Improve this question. Ylyk Coitus Ylyk Coitus 2 2 gold badges 5 5 silver badges 15 15 bronze badges.
Voltage is pressure, amperes is the rate of flow. Your classical analogies are limited, as any electrical flow in intrinsically quantum mechanical. Don't try to "straight up" your analogies, but rather expand your knowledge. Add a comment. Active Oldest Votes. Improve this answer. I mean, I know that a very very very low voltage could produce a huge current, but would a superconductor in total absence of voltage difference produce a current?
I thought voltage has to be defined as a difference in two locations, and the idea of a voltage at a point is meaningless. Search forums. Log in. Install the app. Contact us. Close Menu. Welcome to EDAboard. To participate you need to register. Registration is free. Click here to register now. Register Log in. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser.
It may not display this or other websites correctly. You should upgrade or use an alternative browser. Can we have current without voltage? Thread starter engrbabarmansoor Start date May 24, Status Not open for further replies.
For example, we shorted a DC source a battery to bypass a load, we coun get zero voltage by Ohm's Law remember? Okay nevermind about the resistance discussion, so now we proved it that current may exist even voltage is not present for thoeretical approach. IanP Advanced Member level 5. Re: current The answer is: NO.. Some circuits require a dual supply with three supply connections as shown in the diagram.
For these circuits the zero volts reference point is the middle terminal between the two parts of the supply. On complex circuit diagrams using a dual supply the earth symbol is often used to indicate a connection to 0V, this helps to reduce the number of wires drawn on the diagram. The need to break the circuit to connect in series means that ammeters are difficult to use on soldered circuits.
Most testing in electronics is done with voltmeters which can be easily connected without disturbing circuits. Connecting an ammeter in series. The 30mA current through the resistor and the 60mA current through the lamp add up to the 90mA current through the battery. Voltage is a measure of the energy carried by the charge.
Strictly: voltage is the 'energy per unit charge'. The proper name for voltage is potential difference or p. Voltage is supplied by the battery or power supply. Voltage is used up in components , but not in wires.
We say voltage across a component. Voltage is measured in volts , V. Voltage is measured with a voltmeter , connected in parallel.
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