Core practical: Electrical circuits (Edexcel GCSE Physics): Quizzes

In series

In parallel with the resistor

$R = \frac{V}{I}$

Ohms, Ω

$R_{\text{total}} = R_1 + R_2$

20 Ω

Half (0.20 A vs 0.40 A)

$\frac{1}{R_{\text{total}}} = \frac{1}{R_1} + \frac{1}{R_2}$

5 Ω

Less than either resistor

Current has more than one path

Resistance increases with temperature