Measuring Potential Difference

Part of Potential Difference · Section 3 of 14

Deep DiveUnit: ElectricityGCSE

This deep dive covers Measuring Potential Difference within Potential Difference for GCSE Physics. Revise Potential Difference in Electricity for GCSE Physics with 14 exam-style questions and 30 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 3 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

📏 Measuring Potential Difference

Instrument: Voltmeter

How to connect: In PARALLEL — across the component you're measuring.

Why parallel? Voltage is the energy difference between two points. The voltmeter compares the energy level of charges entering and leaving a component — it must touch both sides simultaneously.

Circuit symbol: Circle with V inside

Practice questions for Potential Difference

Which of the following is the correct definition of potential difference?

A. The total charge flowing through a component per second
B. The resistance of a component measured in ohms
C. The energy transferred per unit charge between two points in a circuit
D. The power dissipated by a component measured in watts

1 markfoundation

Explain what is meant by a potential difference of 6 V across a component.

2 marksstandard

Quick recall flashcards

P.d. equation?

V = E/Q where V = voltage (V), E = energy (J), Q = charge (C). Also V = IR.

What is 1 Volt?

1 Joule per Coulomb (1 V = 1 J/C)

Understanding Potential Difference

Voltage Rules in Circuits

14 questions on Potential Difference — practise free

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