This PowerPoint lesson on Transformers covers the application of induction to the construction of AC transformers. The mathematics and formulae for both power and voltage across transformers is covered, together with a worked example. There is also a comprehensive set of questions and answers. This is the final (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop. v1.1 Question worksheet added complete with answers

This PowerPoint lesson on Generators shows how a rotating coil within a magnetic field can produce a sinusoidal output voltage (potential difference) in a circuit. Oscilloscope readings for an AC suply are looked at in detail so that students can calculate the peak voltage and time period from a diagram. Output wave forms are considered and examples are shown on how these change when the variables of the rotating coil are changed. Finally the engineering systems in a power station generator are covered. This is the seventh (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on Electromagnetic Induction covers the Right-hand Rule for working out the current flow direction for a wire which is moved within a magnetic field, the application of this in creating an output voltage (Potential difference) in a coil and the creation of a sine wave from a rotating magnet in a sensor circuit (e.g. for fluid flow) This is the sixth (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on Electric Motors covers the application of the motor effect (See previous lesson) in the creation of DC electric motors. This lesson recaps the formula F=BIL and then applies this to DC motor construction. The main design components are a loudspeaker are also covered. There is a choice of two PowerPoints to download due to the size of one which contains a short video clip of a loudspeaker showing the vibrations change with amplitude change of input AC. This is the fifth (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on The Motor Effect covers the calculations of the motor force using the formula F=BIL, the use of the Left-hand rule for showing the direction of the motor force on a current carrying wire, and the detailed interaction of magnetic fields between a wire and permanent magnets. There is also a PDF with two examples of charged particles travelling into a magnetic field, for students to complete, that include the answers. This is the fourth (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on Electromagnetism covers the formation of a magnetic field around a current carrying wire using the right hand grip rule, solenoid construction and the methodology of working out which was to orientate a magnetic field through a solenoid. This is the third (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on Magnetising covers creating permanent and temporary magnets, hard and soft magnetic materials, and the practical method for creating electromagnets in the classroom. This is the second (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This PowerPoint lesson on Magnets covers the basics on drawing magnetic fields around bar magnets, both on their own and when attracting and repelling each other. There is also a PDF worksheet with three magnet drawings for the pupils to complete. This is the first (of 8) lessons in this section entitled “Magnetism and Electromagnetism” which is available as a bundle in our shop.

This is a complete set of 49 PowerPoints that covers sections A through to G of the Pearson National BTec Engineering (A-Level standard) These PowerPoints are available individually or as bundles by section, but it is heavily discounted in this complete set Every lesson includes a PowerPoint and this entire bundle is designed as a teaching aid for excellent classroom delivery and confidence that the specification has been covered. Many of the lessons also contain a worksheet complete with answers. This bundle includes the following subsections (also available as individual bundles in our shop): Mathematical Methods (11 Powerpoints) Static Engineering systems (3 PowerPoints) Loaded components(3 PowerPoints) Dynamic Engineering system (4 PowerPoints) Lifting machines (4 PowerPoints) Fluid systems (4 PowerPoints) Thermodynamics (5 PowerPoints) Static and direct current electricity (3 PowerPoints) DC circuits (4 PowerPoints) Magnetism (2 PowerPoints) Electromagnetism (3 PowerPoints) Single phase alternating current (3 PowerPoints)

This is an 7 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of impedance. This lessons covers the calculations to calculate impedance, starting from resistance, capacitance and inductance. This is the third and final PowerPoint in this section (single phase alternating current) and is also the final lesson in the entire scheme of work (available as a single bundle).

This is an 15 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of combining sinusoidal waveforms. This lessons starts with a graphical representation of waveforms for AC voltage, and shows how a resultant wave is formed from two sinusoidal waveforms. This is then extended to a graphical solution method, using vectors for phasors, and then a mathematical method using the cosine and sine rules to add two wave equations together. This is the second PowerPoint in this section (Single phase alternating current). v1.01 (Dec 2021 ) - Minor improvements

This is an 10 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of single phase alternating current theory. This lessons revisits the graphical representation of AC voltage changes as a sine wave, and then covers the calculations for the average and root mean squared voltages. This is consolidated with a worked example that shows how the form factor is a constant. This is the first PowerPoint in this section (Single Phase Alternating Current).

This is an 11 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of self-inductance and transformers. This lessons covers the calculations from self-inductance, and explanation of the unit “henry” and how it applies to circuits, mutual inductance and transformer design and calculations. This is the fifth and final PowerPoint in this section (Magnetism and Electromagnetic induction).

This is an 8 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of DC motors. This short powerpoint is designed to be used alongside a lesson where a DC motor can be examined or where a practical can be performed to create one. This is the fourth PowerPoint in this section (Magnetism and Electromagnetic induction).

This is a 9 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of induced electromotive force e.m.f. (emf). This includes an explanation of how a rotating coil creates an AC sinusoidal output and why eddy currents need to be reduced in ferromagnetic cores. This is the third PowerPoint in this section (Magnetism and Electromagnetic induction).

This is an 8 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of B-H curves. This PowerPoint includes a description of how to plot a graph of B (magnetic flux density in a material) against H (magnetic field from a solenoid) and then goes into detail about analysing the graph to consider coercivity and hysteresis based on permeability. This is the second PowerPoint in this section (Magnetism and Electromagnetic induction).

This is an 11 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of magnetism and solenoids. This PowerPoint includes a description of magnetic strength, magnetic flux density, reluctance, and magnetomotive force. There are several worked examples of the various formulae. This is the first PowerPoint in this section (Magnetism and Electromagnetic induction). v1.01 (Nov 2021 ) - Minor improvements