4.3.3 — Action and use of circuit components

Core

• 4.3.3.1 — Know that p.d. across a conductor increases as resistance increases for constant current

Supplement

• 4.3.3.2 — Describe the action of a variable potential divider
• 4.3.3.3 — Recall and use V1/V2 = R1/R2 for a potential divider