This lesson presentations covers OCR Gateway Physics 9-1 P4.2.5 Transformers. Examples of transformers in everyday life Structure of a transformer Step-up and Step-down transformers Transformer equation and rearranging equations. Worked Examples and Student problems with worked solutions. Explanation for use of step-up transformers - efficiency

This lesson presentations covers OCR Gateway Physics 9-1 P4.2.4 Generators. Uses of generators AC and DC definitions Structure of dynamos and alternators Comparing dynamos and alternators. Plotting graphs for induced potential difference from dynamos and alternators Commercial generators, 230 V at 50 Hz.

This lesson presentations covers OCR Gateway Physics 9-1 P4.2.3 Electromagnetic Induction. Definition of electromagnetic induction How to increase electromagnetic induction Why current is produced from electromagnetic induction Why forces are produced from electromagnetic induction. Exam Style question with solution

GCSE OCR Physics: Building A Motor powerpoint with instruction on how to construct a motor activity.

This presentation covers OCR Gateway Physics 9-1 P4.2.1 b Current and Forces. Units for Magnetic Field Strength Converting from mT to T Magnetic Force Equation Rearranging Equations Increasing the force on a current carrying conductor in an external magnetic field. Student questions and worked answers

This presentation covers OCR Gateway Physics 9-1 P4.2.1 Forces, Current and Fleming’s Left Hand Rule. This presentation includes: Interacting Magnetic Field Lines Increasing Magnitude of the force on a current carrying conductor Applying Fleming’s Left Hand Rule

This presentation covers OCR Gateway Physics 9-1 P4.1.2 Current and Magnetic Fields. Current Produces Magnetic Fields Experiment to Demonstrate Magnetic Field Lines Right-hand Corkscrew Explanation Solenoids MRI imaging

This presentation covers OCR Gateway Physics 9-1 P4.1.1 Magnets and Magnetic Fields. Rules for repulsion and attraction Magnetic Field Line Rules Magnetic field density and magnetic force Modeling the Earth as a Bar Magnet Permanent and Induced Magnets Magnetic Domains

This presentation covers OCR Gateway Physics 9-1 P3.2.8 Electrical Power. Definition of power Standard form for kW and MW The three equations for power Rearranging electrical power equations Derivation of P = I^2 R with subsitution Students questions and worked solutions

This presentation covers OCR Gateway Physics 9-1 P3.2.6 Circuit Calculations. Measuring current and potential difference Adding resistors in series and parallel Rearranging Ohm’s Law Rules for series circuits Worked solutions to series circuit exam questions Rules for parallel circuits Worked solutions to parallel circuit exam questions

This presentation covers OCR Gateway Physics 9-1 P3.2.5 LDR and Thermistors. Circuit Symbols Uses of LDRs and Thermistors Plotting data and characteristic curves Conductors, insulators, and semiconductors Experiment into resistance and temperature of a thermistors Investigation into resistance and light level of a LDR

This presentation covers OCR Gateway Physics 9-1 P3.2.4 Graphs of potential difference (p.d.) and current. Linear circuit element Non-linear circuit element Diodes and Light emitting diode (LED) Current against potential difference graphs How the gradient of a current against potential difference graph relates to resistance Experimental set-up for determining circuit elements How temperature affects resistance in lamps and metal conductors (wires)

This presentations covers the OCR Gateway Physics 9-1 P3.2.3 Resistance Combining resistors in series Combining resistors in parallel Modeling resistance, current, and potential difference with a rope. The relationship between potential difference and current The relationship between resistance and current Ohm’s law Rearranging equations Worked examples and student questions Explaining how increasing current increases resistance in a metal conductor and filament lamp.

This presentation covers OCR Gateway Physics 9-1 P3.2.2 Series and Parallel Circuits Rule for current in series and parallel circuits Rule for potential difference in series and parallel circuits. Working scientifically Student activities with worked solutions Exam questions with worked solutions

This presentation covers OCR Gateway Physics 9-1 P3.2.1 Simple Circuits. Circuit Symbols Electric field lines and potential difference Modeling Circuits with Rope Measuring Potential Difference Energy Transferred Equation for Electricity Rearranging Equations

This presentation covers OCR Gateway Physics 9-1 P3.1.2 Electrical Current Conditions for current to flow Conventional current and electron flow Measuring current with ammeters Current at junctions Converting from mA to A Rearranging equations Determining current and charge flow with equation

This presentation covers OCR Gateway Physics 9-1 P3.1.1 Electrostatics Subatomic particles and electric charge Transfer of electric charge Attraction and repulsion from electric charge Electric field lines Interaction of electric field lines Van der Graff generator

OCR AS Physics A: Total Internal Reflection is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

OCR AS Physics: Refractive Index is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.