ABSTRACT
This chapter discusses list the three effects of an electric current: heating effect, chemical effect and magnetic effect and explains specify the SI unit of measurement of electric current. It describes specify which of the three effects is used to define the SI unit of electric current and explores state the relationship between electric current and electric charge. The chapter also explores state the SI unit of measurement of electric charge and also discusses solve simple problems on the relationship between electric current and electric charge. Heating effect – an electric current causes a conductor's temperature to rise. Chemical effect – an electric current can be responsible for chemical reactions. The 'speed' of an electric current has nothing to do with its unit of measurement. The chapter also describes the effect on the charge drift velocity of varying the current through, or varying the cross-sectional area of, a conductor.
