Physics Equations 3.5 / 5 based on 2 ratings ? PhysicsEquationsGCSEAQA Created by: tyne1Created on: 03-11-17 14:42 Equation for power? (electricity) P=V×I (power= voltage × current) 1 of 19 Equation for voltage? V=I×R (voltage= current × resistance) 2 of 19 Equation for charge? Q=I×T (charge= current × time) 3 of 19 Equation for energy? E=V×Q (energy= voltage × charge) 4 of 19 Transformer equation? Vp/Vs = Np/Ns 5 of 19 Equation for total cost? number of units × cost per unit 6 of 19 Equation for efficiency(%) ? (useful energy out ÷ total energy in) × 100 7 of 19 Equation for work done? W=F×D (work done= force × distance) 8 of 19 Equation for power? (energy) P=E÷T (power= energy ÷ time) 9 of 19 Equation for time? S=D÷T (speed= distance ÷ time) 10 of 19 Equation for acceleration? A=(V-U)÷T (acceleration= change in velocity ÷ time) 11 of 19 Equation for force? F=M×A (force= mass × acceleration) 12 of 19 Equation for weight? W=M×G (weight= mass × gravity) 13 of 19 Equation for momentum? P=M×V (momentum= mass × velocity) 14 of 19 Equation for change in momentum? force × time 15 of 19 Equation for density? D=M÷V (density= mass ÷ volume) 16 of 19 Equation for pressure? P=F÷A (pressure= force ÷ area) 17 of 19 Equation for moment? m=f×d (force × perpendicular distance from pivot) 18 of 19 Equation for velocity? (waves) velocity= frequency × wavelength 19 of 19

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