I need a specific voltage from a battery. Can resistors help achieve this, and if so, how?

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Yes, resistors can be used to divide voltage in a circuit through a configuration known as a voltage divider. A voltage divider is a simple circuit that uses two resistors in series to produce a voltage that is a fraction of the input voltage. The principle behind a voltage divider is based on Ohm's Law and the concept of series circuits where the voltage drop across each resistor is proportional to its resistance.