physics p2 3.0 / 5 based on 1 rating ? PhysicsGCSE Created by: Keri AllenCreated on: 24-05-11 17:32 lightning rain + ice bump together = knock of electrons top of cloud = positively charged bottom of cloud = negatively charged huge voltage and MASSIVE spark 1 of 6 Circuits Current - flow of electrons - AMPERE, A. voltage - driving force that pushes current around, Electrical pressure - VOLT, V. resistance -SLOWS things down - OHM, . increased voltage = MORE CURRENT. increase resistance = LESS CURRENT. 2 of 6 Ammeter measures current - AMPS. must be in series! never in parralel! 3 of 6 voltmeter measures voltage - volts. must be in parallel! never series! 4 of 6 voltage-current graphs different resistors filament lamp Diode 5 of 6 calculating resistance RESISTANCE = POTENTIAL DIFFERENCE / CURRENT 6 of 6
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