Cambridge IGCSE Physics
4.2.2Electric current
Electric current in Cambridge IGCSE Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic14 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 4.2.2.1Know that electric current is related to the flow of charge.
- 4.2.2.2Describe using analogue and digital ammeters with different ranges.
- 4.2.2.3Describe conduction in metals by the movement of free electrons.
- 4.2.2.4Know the difference between direct current and alternating current.
- 4.2.2.5Supplement: define current as charge passing a point per unit time and use I = Q/t.
- 4.2.2.6Supplement: state that conventional current flows from positive to negative while electrons flow from negative to positive.
Lessons
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Electric current
25 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Electric current into a strength.
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