0625 Physics IGCSE 29/03/26 7:42 PM
LAST-MINUTE FORMULAE FOR PHYSICS 0625
1. Density = mass/volume (p=m/v)
2. Speed = distance/time (s=d/t)
3. Acceleration = change in velocity/time (a=(v-u)/t)
4. Gravitational Field Strength = weight/mass (G=w/m)
5. Force = mass * acceleration (F=ma)
6. Momentum = mass * velocity (p=mv)
7. Impulse = force * time (i=f*(v-u))
8. Resultant Force = change in momentum/time (f=p(v-u)/t(v-u))
9. Moment = force * perpendicular distance (M=fd)
10. Spring Constant = force/unit extension (k=F/x)
11. Pressure = force/area (p=f/a)
12. Pressure In Liquid = density * gravity * depth (p=ϱgh)
13. Efficiency = output/input (e=o/i)
14. % Efficiency = (output/input) * 100 (%e=(o/i)*100)
15. Change In G.P.E = weight * height (Ep=mgh)
2
16. Kinetic Energy = ½ * mass * speed (Ek=(mv2)/2)
17. Work Done = force * distance (W=fd)
18. Power = work done/time (P=W/t)
19. Power = energy transferred/time (P=e(v-u)/t)
20. pV = constant (p1v1=p2v2)
21. S.H.C = energy required/(mass * temperature increase) (c=e(v-u)/(m*temp))
22. Refractive Index = sin i/sin r (n=sin i/sin r)
23. Refractive Index = speed in vacuum/speed in material
24. Critical Angle = sin-1(1/Refractive Index) (C=sin-1(1/n)
25. Wave Speed = frequency * wavelength (v=fλ)
26. Current = charge/time (I=Q/t)
27. Potential Difference = work done/charge (V=W/Q)
28. E.M.F = work done/charge (E=W/Q)
29. Resistance = p.d./current (R=V/I)
30. Power = Current * P.D. (P=IV)
31. Energy Transferred = current * p.d. * time (E=IVt)
32. Kilo-watt Hour = kilo-watt * time (hours) (kWh=kW*h)
33. Resistance In Series = Sum of Resistance (R1+R2+R3,etc)
34. Resistance In Parallel = 1/sum of resistance (1/R=(1/R1)+(1/R2),etc)
35. Resistance Of Potential Divider ((R1/R2)=(V1/V2))
36. Voltage Ratio = Turns Ratio ((Np/Ns)=(Vp/Vs))
2
37. Power Loss = Current * Resistance (P=I2R)
38. Power In Primary = Power In Secondary (IpVp=IsVs)
39. Avg Orbital Speed = (2 * π * orbital radius)/time (v=(2πr)/t)
40. Age Of Universe = 1/Hubble’s Constant (1/Ho)=(d/v)
By Rugved Chavan 1
LAST-MINUTE FORMULAE FOR PHYSICS 0625
1. Density = mass/volume (p=m/v)
2. Speed = distance/time (s=d/t)
3. Acceleration = change in velocity/time (a=(v-u)/t)
4. Gravitational Field Strength = weight/mass (G=w/m)
5. Force = mass * acceleration (F=ma)
6. Momentum = mass * velocity (p=mv)
7. Impulse = force * time (i=f*(v-u))
8. Resultant Force = change in momentum/time (f=p(v-u)/t(v-u))
9. Moment = force * perpendicular distance (M=fd)
10. Spring Constant = force/unit extension (k=F/x)
11. Pressure = force/area (p=f/a)
12. Pressure In Liquid = density * gravity * depth (p=ϱgh)
13. Efficiency = output/input (e=o/i)
14. % Efficiency = (output/input) * 100 (%e=(o/i)*100)
15. Change In G.P.E = weight * height (Ep=mgh)
2
16. Kinetic Energy = ½ * mass * speed (Ek=(mv2)/2)
17. Work Done = force * distance (W=fd)
18. Power = work done/time (P=W/t)
19. Power = energy transferred/time (P=e(v-u)/t)
20. pV = constant (p1v1=p2v2)
21. S.H.C = energy required/(mass * temperature increase) (c=e(v-u)/(m*temp))
22. Refractive Index = sin i/sin r (n=sin i/sin r)
23. Refractive Index = speed in vacuum/speed in material
24. Critical Angle = sin-1(1/Refractive Index) (C=sin-1(1/n)
25. Wave Speed = frequency * wavelength (v=fλ)
26. Current = charge/time (I=Q/t)
27. Potential Difference = work done/charge (V=W/Q)
28. E.M.F = work done/charge (E=W/Q)
29. Resistance = p.d./current (R=V/I)
30. Power = Current * P.D. (P=IV)
31. Energy Transferred = current * p.d. * time (E=IVt)
32. Kilo-watt Hour = kilo-watt * time (hours) (kWh=kW*h)
33. Resistance In Series = Sum of Resistance (R1+R2+R3,etc)
34. Resistance In Parallel = 1/sum of resistance (1/R=(1/R1)+(1/R2),etc)
35. Resistance Of Potential Divider ((R1/R2)=(V1/V2))
36. Voltage Ratio = Turns Ratio ((Np/Ns)=(Vp/Vs))
2
37. Power Loss = Current * Resistance (P=I2R)
38. Power In Primary = Power In Secondary (IpVp=IsVs)
39. Avg Orbital Speed = (2 * π * orbital radius)/time (v=(2πr)/t)
40. Age Of Universe = 1/Hubble’s Constant (1/Ho)=(d/v)
By Rugved Chavan 1
