Topic 12 0.0 / 5 ? PhysicsElectrical currentASAQA Created by: Jemma1494Created on: 07-06-21 14:00 Power equation (Energy) Power = energy/time P =E/t 1 of 12 Power equation (Current) Power = current x voltage P = IV 2 of 12 Charge equation Charge = current x time Q = IT 3 of 12 Voltage equation (Energy) Voltage = energy / charge V = E/Q 4 of 12 Insulator No free electrons so no current 5 of 12 Conductor Free electrons so current 6 of 12 Superconductor Low heat = no resistance 7 of 12 Thermistor Temp Up Resistance Down 8 of 12 Ohms law Voltage is proportional to current 9 of 12 Resistivity P = RA/L 10 of 12 Series circuit Current = constant Voltage = split Resistance = R1 + R2 11 of 12 Parallel circuit Current = split Voltage = constant Resistance 1/totalR = 1/R1 + 1/R2 12 of 12
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