In metallic conductors and also resistors, the current flowing through it isproportional to the applied voltage across it, and for a resistor which is kept constant, doubling the voltage doubles the current and so on.

• ### What happens when current flows through a resistor?

• However, when this Current I flows thru a Resistor R, a VOLTAGE DROP V of magnitude {V = I*R} occurs across the Resistor. (The measured Voltage on one side of the Resistor will be less than that on the other when referenced to the same zero point in the circuit).

• ### Is current used up in a resistor or voltage used up?

• is current used up in a resistor or the voltage is used up? For Resistors (to which this question refers) in any circuit, the Current entering a Resistor EQUALS the Current exiting the Resistor (otherwise, like Data points out, electrons would accumulate inside the Resistor). Thus, there is no loss of current inside a Resistor.

• ### Is current the same before and after resistance?

• This is Ohm’s law, which states that voltage (V) is equal to the current (I, measured in Amps) times the resistance (R, measured in ohms). Furthermore, is current the same before and after a resistor? The current after a resistor is the exact same as it was before the resistor.

• ### What is the work of a resistor?

• A resistor is an imperfect conductor, which means current cannot flow through it effortlessly. The effort required to push the charges through the resistor is supplied by voltage. Work expended per unit of time is equal to effort x flow which in this case is voltage x current, or watts.