OCR A level Physics: Chapter 23 Magnetic Fields is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 23.1 Magnetic fields 23.2 Understanding magnetic fields 23.3 Charged particles in magnetic fields 23.4 Electromagnetic induction 23.5 Faraday’s law and Lenz’s law 23.6 Transformers Attraction and repulsion of magnets Rules for magnetic field lines The magnetic field of Earth Applying the right-hand cork screw rule How to create uniformed magnetic fields Solenoids Fleming’s left hand rule Determining the direction of force on a current carrying conductor Calculating the magnitude of force on a current carrying conductor Angles between the magnetic field and current carrying conductor An experiment to determine the magnetic flux density of a field. Apply Fleming’s left-hand rule to charged particles Deriving an equation for the magnetic force experienced by a single charged particle (F = BQv) Charged particles describing (moving) in circular paths in magnetic fields. The velocity selector. The Hall probe and Hall voltage. Electromagnetic induction produces an induced e.m.f Conditions to produce electromagnetic induction How to increase electromagnetic induction Magnetic flux density, magnetic flux, and magnetic flux linkage Units of weber (Wb) Magnetic flux density and magnetic flux linkage Faraday’s Law Lenz’s Law Alternators and induced e.m.f. Graphs of flux linkage and induced e.m.f. Structure of transformers Step-up and step-down transformers The turn-ratio equation The ideal transformer equation Why transformers are used in the National Grid

OCR A level Physics: Chapter 22 Electric Fields is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 22.1 Electric Fields 22.2 Coulomb’s Law 22.3 Uniform electric fields and capacitance 22.4 Charged particles in uniformed electric fields 22.5 Electric potential and energy Electric field line pattern from point charges, uniformly charged objects, and capacitors. Rules for electric field lines Interacting field lines for attraction and repulsion Detecting electric fields with a charged gold leaf Definition of electric field strength Explaining that electric field strength is a vector with magnitude and direction Apply the equation for electric field strength Electric force related to the product of charge and square of the separation The constant of proportionality 𝑘 Permittivity of free space Experiment for investigating Coulomb’s Law Electric Field Strength and Coulomb’s Law Liquid crystal displays (LCDs) Electric field between two charged parallel plates Deriving an equation for electric field strength of a parallel plate capacitor. Accelerating charged particles in a uniformed electric field Capacitance of a parallel plate capacitor with an insulating (dielectric) material - relative permittivity Millikan’s experiment Equations for constant acceleration Maximum kinetic energy of a charged particle in a uniformed field Sketching trajectories for charged particles in uniformed fields Calculating velocities for horizontal and vertical components Definition of electric potential energy Definition of electric potential. Definition of electric potential difference. Using a force-distance graph to determine electric potential energy Using electron-volts and joules in calculations Capacitance of an isolated charged sphere

OCR A level Physics: Chapter 21 Capacitance is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 21.1 Capacitors 21.2 Capacitors in circuits 21.3 Energy stored by capacitors 21.4 Discharging capacitors 21.5 Charging capacitors 21.6 Uses of capacitors Electrical quantities, symbols, and units SI prefixes and standard form Definition of a capacitor Structure of a capacitor Calculating capacitance, charge, and potential difference. Uses of capacitors in circuits. Rules for capacitors in parallel (potential difference, charge, and capacitance). Rules for capacitors in series (potential difference, charge, and capacitance). Applying the rules in series and parallel. Creating a circuit to calculate the charge stored on the capacitor. Work done of a capacitor depends upon the initial potential difference and capacitance. Work done is provided by the source of potential difference. Deriving three equations for work done of a capacitor. Exponential increase and exponential decay Explaining how capacitors discharge through a resistor in parallel Definition of time constant for a capacitor Showing that time constant has units of seconds Iterative method for finding how capacitors discharge Using exponentials and logs. Solving a differential equation (needed for A-level Maths). Explaining how capacitors charge with a resistor in series Explaining how 𝑉, 𝐼, or 𝑄, change with time 𝑡 for a charging capacitor. Sketching graphs for 𝑉, 𝐼, or 𝑄, after time 𝑡 for a charging capacitor. Calculating 𝑉, 𝐼, or 𝑄, change with time 𝑡 for a charging capacitor. Calculating power output from a circuit containing a capacitor A rectifier circuit - changing an alternating input to a smooth output