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Rozwind
when the external electrical potential difference is applied across the conductor ,electrons flow in the direction opposite to the current.Whether the number of free electrons in the conductor decrease?
The question has been given in my textbook and consequences for the charge or voltage on conductor haven't been mentioned but the resistance is constant. I think the answer should be No. Am I correct?BvU said:Hello Roz,
A good question. Is it yours or has it been asked to you ? (if the latter, post in homework !)
For the answer, consider what the consequence would be for the charge (and thereby the voltage) on the conductor.
I agree. At the positive end of the conductor, just as many electrons leave as there are coming in at the other end.Rozwind said:I think the answer should be No
Ok. Thank You.BvU said:I agree. At the positive end of the conductor, just as many electrons leave as there are coming in at the other end.
Actually, this isn't homework. I was reading the lesson beforehand.BvU said:Next time: post in homework and make good use of the template there !
Electric current is the flow of electric charge through a conductive material. It is measured in units of amperes (A) and is represented by the symbol "I".
Electric current is created when there is a difference in electric potential, also known as voltage, between two points. This causes the flow of electrons from a higher potential to a lower potential, generating an electric current.
Potential difference, also known as voltage, is the difference in electric potential between two points. It is measured in units of volts (V) and is represented by the symbol "V".
Resistance is a measure of how difficult it is for electric current to flow through a material. The higher the resistance, the lower the electric current. This relationship is described by Ohm's Law: V = IR, where V is the voltage, I is the current, and R is the resistance.
There are many devices that use electric current and potential difference, such as light bulbs, refrigerators, computers, and cell phones. These devices use the flow of electric current to power their functions.