# Do Resistors Reduce Current Or Voltage?

A resistor has the ability to reduce voltage and current when used in a circuit. The main function of a resistor is to limit current flow. Ohm’s law tells us that an increase in a resistors value will see a decrease in current. To reduce voltage, resistors are set up in a configuration known as ‘voltage divider’.

## How does a resistor reduce the current in a circuit?

The main function of a resistor is to limit current flow. Ohm’s law tells us that an increase in a resistors value will see a decrease in current. To reduce voltage, resistors are set up in a configuration known as ‘voltage divider’. Also, with every component in a circuit, the resistor drops voltage across its terminals.

## How does a resistor work in an inverting amplifier?

Take an inverting amplifier using an op-amp. The input resistor controls current based on the input voltage. The output resistor could also be said to control current because it converts the amplifier's output voltage into a current into the summing node.

## How does a resistor obey ohm's law?

The condition for the resistor to obey Ohm's Law is that it has a linear I-V (Current to Voltage) curve, which means that if you plot current vs voltage where current is the y-axis and voltage is the x-axis, you will have a straight line.

## How are resistors used in a voltage divider?

Voltage dividers use resistors of fixed value to adjust the output voltage. However, if a variable resistor is used at R2, the output voltage can be varied by adjusting the variable resistor. A great application for this is volume control in a music system. What are the different types of resistors used to reduce current and voltage?

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