A-Level Physics OCR A H556

potential divider circuit with components

Learners will also be expected to know about a potentiometer as a potential divider.

potential divider circuits with variable components e.g. LDR and thermistor

(i) potential divider equations e.g.

$V_{out} = \dfrac{R_2}{R_1 + R_2} × V_{in}$ and $\dfrac{V_1}{V_2} = \dfrac{R_1}{R_2}$

(ii) techniques and procedures used to investigate potential divider circuits which may include a sensor such as a thermistor or an LDR.

PAG4