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 Chapter 11
Current and circuits
LEARNING OBJECTIVES
In this chapter you will learn how to:
âcalculate current, potential difference and power dissipated in circuit components
âunderstand how current in a circuit component generates thermal energy
âdefine and understand electric resistance
âdescribe Ohmâs law
âunderstand the factors that affect resistance
âcombine resistors
âanalyse an electric circuit
âdistinguish between emf and terminal potential difference
âwork with potential divider circuits
GUIDING QUESTIONS
How do we analyse an electric circuit?