Course content

41 lessons

9.1-9.3 · Electricity

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10.1-10.3 · D.C. circuits

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Kirchhoff’s second law: the loop adds up

Resistors in series add

Parallel gives less than the smallest

A cell keeps some of its own e.m.f.

Terminal p.d. = E − Ir

Two resistors split the voltage

A divider that senses temperature

The potentiometer draws no current at balance

Complex to simple: reducing a network before you solve it

Solving a circuit the series and parallel rules cannot touch

What an ammeter and a voltmeter are actually made of

Arranging cells: more in series is not always more current

One exam question, end to end

D.C. circuits: quick revision

11.1-11.2 · Particle physics

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10.1-10.3 · D.C. circuitsLesson 10 of 16

The potentiometer draws no current at balance

Potential grows evenly along a uniform wire, so a balance length measures e.m.f.

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