Best answer


when the current passes through a resistor,some electrons are blocked and can not move. The energy is released as heat and the current is reduced. resistance resists current up to its manufacturing value. it might be useful to imagine a dam holding the water up to its manufacturing height.

People also ask


  • How do resistors affect the flow of electric current?

  • What resistors do is that they increase the resistance, and thereby the loss of kinetic energy. This automatically decreases the average drift velocity of the electrons and accordingly, the rate of flow of electric charge ( current)

  • What are resistors used for?

  • People who make electric or electronic circuits to do particular jobs often need to introduce precise amounts of resistance. They can do that by adding tiny components called resistors. A resistor is a little package of resistance: wire it into a circuit and you reduce the current by a precise amount.

  • What happens when a resistor has a non-zero current?

  • Recall that a resistor with non-zero current through has, by Ohm’s law, a non-zero voltage across, i.e., there is a potential difference across the terminals of the resistor. Thinking in terms of electrons, the electrons exit the resistor terminal that is the more positive.

  • How current is produced in a series circuit?

  • This alternately slowing down and speeding up of the electrons produces a net constant average speed (current) going into and out of each resistor of a series circuit. Hope this helps. Show activity on this post.