This resource is a complete lesson that covers Circuits, Current & Potential Difference for the OCR A Level Physics A course. However, it is useful for other exam boards too.
This lesson teaches the following content:
-circuit symbols
-drawing circuit diagrams
-electric current as rate of flow of charge; I = Q / t
-the coulomb as the unit of charge
-the elementary charge e equals 1.6 × 10–19 C
-net charge on a particle or an object is quantised and a multiple of e
-current as the movement of electrons in metals and movement of ions in electrolytes
-conventional current and electron flow
-mean drift velocity of charge carriers
-I = Anev, where n is the number density of charge carriers
-distinction between conductors, semiconductors and insulators in terms of n.
-potential difference (p.d.); the unit volt
-energy transferred: W = VQ
-energy transfer eV = 1/2 mv2 for electrons and other charged particles.
This lesson includes:
-A full presentation including 5 example questions with worked solutions.
-A worksheet with model answers, perfect to set as homework.
-Clear visual aids and diagrams to simplify complex concepts.
-Editable PowerPoint and Word document for easy customisation.
Click on the links below to check out our FREE A Level Physics resources:
Mass, Weight & Force Basics Lesson
Net Forces & Equilibrium Lesson
Moments & Torques Lesson
Drag & Terminal Velocity Lesson
Density, Pressure & Upthrust Lesson
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