Slide Preview for P6 Electricity for Gadgets

Powerpoint Description:

This slideshow covers the OCR Gateway Triple Science P6 unit and includes: circuit symbols, definition of electric current, using rheostats, calculating resistance, current-voltage graphs for ohmic conductors, what resistance is and how it is affected by temperature, potential dividers, LDRs and thermistors and their resistance, using LDRs and thermistors in circuits, calculating the total resistance of resistors in series and parallel, development of computers, transistors, using transistors as switches, combining transistors to make logic gates, AND, OR and NOT gates, truth tables for logic gates, NAND and NOR gates, truth tables for combinations of logic gates, using LDRs and thermistors in logic circuits, using LEDs with logic gates, relays, magnetic fields around a wire, solenoid and rectangular coil, the motor effect, Fleming's Left Hand Rule, electric motors and how they work, electromagnetic induction, AC generators, how transformers work, the transformer equation, isolating transformers, using transformers in the National Grid, power loss in the National Grid, diodes, how diodes work using holes and electrons, full-wave rectification, half-wave rectification, capacitors, charging and discharging capacitors, using capacitors and diodes in smoothing circuits.