: What does a resistor do to the current in a circuit?
In: Physics
It resists it.
Resistors resist electrical current flow. The main result is heat as the energy you are pushing into the circuit to move electrons hits the resistive element.
In a series circuit it will reduce current flow overall, the current at any point in the circuit is the same, it doesn’t cause a drop accross the resistor. But the increased resistance vs the voltage lowers the total current. Reduce the resistance with the same voltage and the current increases. Increase the resistance and the current drops.
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