Potential divider (AQA A-Level Physics): Flashcards

Circuit with resistors in series producing fraction of source voltage

$V_{out} = V_{in} \times \frac{R_2}{R_1 + R_2}$

Decreases current, reducing $V_{out}$ across $R_2$

Increases current, raising $V_{out}$

Decreases

Decreases (in most cases)

LDR resistance increases, $V_{out}$ reduces

Automatically turn on street lamps as it gets dark

Regulate heating systems

In series