ElectricityIntroduction

The Narrow Pipe Problem

Part of Resistance & Ohm's Law · GCSE GCSE Physics revision

This introduction covers The Narrow Pipe Problem within Resistance & Ohm's Law for GCSE Physics. Revise Resistance & Ohm's Law in Electricity for GCSE Physics with 16 exam-style questions and 30 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 1 of 16 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 16

Practice

16 questions

Recall

30 flashcards

🔌 The Narrow Pipe Problem

Imagine trying to push water through different pipes. A wide, smooth pipe offers little resistance — water flows easily. A narrow, rough pipe resists the flow — you need more pressure to push the same amount through. Electrical resistance works the same way. A thick copper wire has low resistance; a thin nichrome wire has high resistance. The equation V = IR tells you that for a given voltage, higher resistance means less current can flow.

Keep building this topic

Read this section alongside the surrounding pages in Resistance & Ohm's Law. That gives you the full topic sequence instead of a single isolated revision point.

Understanding Resistance and Ohm's Law The V-I-R Triangle What Affects the Resistance of a Wire?

Practice Questions for Resistance & Ohm's Law

Which of the following best describes electrical resistance?

A. The amount of charge flowing past a point per second
B. The opposition to the flow of current in a circuit
C. The energy transferred per unit charge by the source
D. The rate at which electrical energy is transferred

1 markfoundation

Explain what is meant by an ohmic conductor.

2 marksstandard

Quick Recall Flashcards

Ohm's Law equation?

V = IR where V = voltage (V), I = current (A), R = resistance (Ω)

Unit of resistance?

Ohm (Ω)

16 questions on Resistance & Ohm's Law — practise free

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Resistance & Ohm's Law

Understanding Resistance and Ohm's Law