A-Level Physics Specification

OCR A H556

Section 4.3.1: Series and parallel circuits

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#4.3.1a

Kirchhoff’s second law; the conservation of energy

#4.3.1b

Kirchhoff’s first and second laws applied to electrical circuits

#4.3.1c

total resistance of two or more resistors in series;
\(R = R_1 + R_2 + ... \)

#4.3.1d

total resistance of two or more resistors in parallel;
\(\dfrac{1}{R} = \dfrac{1}{R_1} + \dfrac{1}{R_2} + ... \)

#4.3.1e

analysis of circuits with components, including both series and parallel

#4.3.1f

analysis of circuits with more than one source of e.m.f.