electronics what is a resistor
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit.Resistors can also be used to provide a specific voltage for an active device such as a transistor.All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.esistors can also be used to provide a specific voltage for an active device such as a transistor. All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.