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Chapter 11

Current and circuits

LEARNING OBJECTIVES

In this chapter you will learn how to:

●calculate current, potential difference and power dissipated in circuit components

●understand how current in a circuit component generates thermal energy

●define and understand electric resistance

●describe Ohm’s law

●understand the factors that affect resistance

●combine resistors

●analyse an electric circuit

●distinguish between emf and terminal potential difference

●work with potential divider circuits

GUIDING questions

How do we analyse an electric circuit?