Electricity

Electricity is an important way of transferring energy.  It has the advantage that it can be distributed nationwide from central power stations, where it is generated in bulk.  Electrical phenomena have been recognised by physicists for about two hundred years, and have been put to work over the last one hundred and fifty years.

In this unit, you will study the physics behind DC electric circuits and alternating currents.  You will also study the characteristics of some resistive transducers.

1. DC Electrical Circuits

Tutorial 1

Basic Electrical Measurements

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Tutorial 2

Ohm's Law

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Tutorial 3

Voltage-Current Characteristics

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Tutorial 4

Resistivity

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Tutorial 5

Energy and Power in a Circuit

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Tutorial 6

Passive Transducers

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Tutorial 7

Series and Parallel Circuits

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Tutorial 8

EMF and Internal Resistance

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2. Alternating Currents (A-level)

Tutorial 9

Alternating Currents

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Tutorial 10

The Cathode Ray Oscilloscope.

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Tutorial 11

Capacitors and AC (Extension material.  WJEC syllabus Option A and SQA Advanced Higher)

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Tutorial 12

Inductors and AC (Extension material.  WJEC syllabus Option A and SQA Advanced Higher)

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AS Data Sheet (.pdf file).  Click on the PDF icon.  Download it, print it off, and use it whenever you do a test. 

It will also make very good lavatory reading.  Knowing where a formula can be found will help you no end in the exam.

Circuit Symbols (as .pdf file).  Download it, print it off, and learn the symbols.

Electricity Topic test based on past questions.  Model answers are available.

Topic Test

Mock examination using a past paper (June 2009).

Mock Exam

Mark scheme for the past paper.  Note that a mark scheme does not give model answers.  If in doubt, ask your teacher.

Mark Scheme

Home (just like it says on the button).

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