Cambridge IGCSE Physics Revision Core Concepts Exam Preparation Online

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Lesson 4.2.4: Potential Difference ??? Measuring voltage as energy transferred per unit charge (V = E/Q); practical circuit experiments.

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Lesson 4.2.3: Electromotive Force ??? Understanding e.m.f. as energy supplied per unit charge by a source; measuring with voltmeters.Previous Lesson 4.2.5: Resistance Basics ??? Defining resistance as opposition to current; calculating using R = V/I with simple circuits.Next