Free November promotion: everything is free until 30 November 2026 — every subject, unlimited practice.
Subjects / LC Physics / Electricity and magnetism

Resistance and circuits

Ohm's law, resistivity, series and parallel combinations, Wheatstone bridge.

5th Year6th Year HigherOrdinary
Helps to know first: Electric current and charge
15practice questions

Multiple choice: 5 · Numeric answer: 7 · Put in order: 1 · Short answer: 1 · Written answer (self/teacher assessed): 1

Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.

Practise this topic

Try a question

Numeric answer
Three resistors of 26 Ω, 22 Ω and 7 Ω are connected in series. What is the total resistance?
+R1R2R3
Whole numbers, decimals (2.5) or fractions (3/4).
Hint 1

In series, resistances add.

Create a free account to save your progress.