Resistors are passive electronic components that impede the flow of current in a circuit. They do this by resisting the flow of electrons, which results in a decrease in the amount of current passing through them.
The formula for calculating current in a resistor is Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. This formula can be used to determine the current flowing through a resistor in a circuit.
The higher the value of resistance, the less current will flow through a resistor. This is because resistance and current have an inverse relationship, meaning that as one increases, the other decreases.
Current can be measured in a resistor using a multimeter, which is a device that measures electrical properties such as voltage, current, and resistance. To measure current in a resistor, the multimeter must be set to the appropriate setting and connected in series with the resistor in the circuit.
The current in a resistor can be affected by several factors, including the value of resistance, the voltage applied to the circuit, and the temperature of the resistor. Other factors such as the type of material used in the resistor and the length and thickness of the resistor can also impact the flow of current.
