logo

Learning objective

Recall and apply in calculations the following principles: (a) the total current entering a junction in a parallel circuit equals the total current leaving it; (b) the total potential difference across components in a series circuit equals the sum of the individual potential differences; (c) the potential difference across each branch in a parallel circuit is the same as the potential difference across the entire arrangement.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceElectricitySupplement content

Study support

Understand this objective

Quick explanation

Recall and apply in calculations the following principles: (a) the total current entering a junction in a parallel circuit equals the total current leaving it; (b) the total potential difference across components in a series circuit equals the sum of the individual potential differences; (c) the potential difference across each branch in a parallel circuit is the same as the potential difference across the entire arrangement

  • This point belongs to Electrical circuits, especially Electrical circuits outcomes.
  • You need to be able to recall and apply in calculations the following principles: (a) the total current entering a junction in a parallel circuit equals the total current leaving it; (b) the total potential difference across components in a series circuit equals the sum of the individual potential differences; (c) the potential difference across each branch in a parallel circuit is the same as the potential difference across the entire arrangement.
  • The key ideas to know are Calculate and Discuss.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateDiscuss

Why it matters

This objective helps connect Electrical circuits outcomes to exam-style questions, flashcards, and revision notes for Electrical circuits.

Revision tools

Choose how to practise

Back to topic hub
Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move
Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 4 structured question: Electrical circuits

Paper 4Theory (Extended)3 marks

Description

Current and Potential Difference in Circuits

Consider a circuit with two resistors in series and a parallel circuit with three branches. Analyze the current and potential differences in both configurations.

  1. a

    Analyse Explain how the total current and potential difference behave in the given circuits.

    Aim for approximately 3 distinct marking points.

    [3]
Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Open revision notes

Related learning objectives

Revision hubs

Move back to a broader study route