source : yahoo.com
When an electric current flows through a long conductor, each free electron moves?
it would be D ,through a relatively short distance.
in a wire,when an electric field is sent,the valence electrons move at a speed of 30-40 cm per minute.so how does so fast the fan moves as soon as we pull the switch???
well,it is not the electron that moves so fast.it is the electric field that moves at a speed of closely to light speed and it causes every electron of the wire to move.as far as we pull the switch,the electric field is sent to the whole wire and the electrons inside the armeture or core of the fan moves so the fan moves immediately.
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What is Electric Current » Electronics Notes – Electric current is an important quantity in electronic circuits. When a voltage is applied across the conductor or semiconductor, electric On the other hand, if two same or like charges are placed close to each other they get repelled. When a proton is placed closer to an electron, they get attracted.The individual electron moves a short distance. A. Electric fields cause atoms to move in the wire. B. Electrons flow. An alternating current and a direct current flows simultaneously in the same conductor. if the effective value of the alternating current is 5A and the direct current is 10 A, what…Usually no. When the conductor loses electrons from one end it receives electrons from the other end. While it can happen when the conductor is removed from a high voltage circuit Now, you will understand that there can not be loss of electrons from conductor when current passes through it.