Everything CCEA students need to know about how to conduct an investigation into the resistance of a metallic conductor.

This circuit contains a 5 Ω resistor in series with two resistors, 6 Ω and 4 Ω, which are in parallel. Start by calculating the combined resistance of the two parallel resistors.

We’ll explain how to calculate resistance using the formula R=IV , where R is resistance, V is voltage, and I is current, and show how this simple equation helps us understand how resistors ...