This document contains summaries of common physics equations related to electricity, waves, work, weight, speed, acceleration, energy, force, and transformers. Key equations defined include potential difference equaling current times resistance, power equaling potential difference times current, wave speed equaling frequency times wavelength, work done equaling force applied times distance moved, weight equaling mass times gravitational field strength, average speed equaling distance divided by time, and acceleration equaling change in velocity divided by time taken for the change.

1. Physics Equations

2. Electricity potential difference = current × resistance (volt, V) (ampere, A) (ohm, Ω) V = I x R V R I

3. 10 0 1 2 3 4 5 6 7 8 9

4. Electricity power = potential difference × current (watt, W) (volt, V) (ampere, A) P = V x I P I V

5. 10 0 1 2 3 4 5 6 7 8 9

6. Wave Speed wave speed = frequency × wavelength (metre/second, m/s) (hertz, Hz) (metre, m) v = f x λ v λ f

7. 10 0 1 2 3 4 5 6 7 8 9

8. Work work done = force applied × distance moved (joule, J) (newton, N) (metre, m) W d F W = F x d Work = Energy Transferred

9. 10 0 1 2 3 4 5 6 7 8 9

10. Weight weight = mass × gravitational field strength (newton, N) (kilogram, kg) (newton/kilogram, N/kg) W g m W = m x g

11. 10 0 1 2 3 4 5 6 7 8 9

12. Speed average speed = distance / time (m/s) (metres, m) (seconds, s) d t s s = d / t

13. 10 0 1 2 3 4 5 6 7 8 9

14. Acceleration v t a a = v / t acceleration = change in velocity (metre/second, m/s) ( m/s 2 ) time taken for change (second, s)

15. 10 0 1 2 3 4 5 6 7 8 9

16. Higher Tier

17. 10 0 1 2 3 4 5 6 7 8 9

18. Energy change in potential energy = weight × change in vertical height (joule, J) (newton, N) (metre, m) PE h mg PE = m g h

19. 10 0 1 2 3 4 5 6 7 8 9

20. Energy kinetic energy = ½ × mass × speed² (joule, J) ( kg) (m/s)² KE v 2 ½ m KE = ½ m v 2

21. 10 0 1 2 3 4 5 6 7 8 9

22. Electrical Energy energy transferred = potential difference × charge (joule, J) (volt, V) (coulomb, C) E Q V E = V x Q

23. 10 0 1 2 3 4 5 6 7 8 9

24. Electrical Charge charge = current × time (coulomb, C) (ampere, A) (second, s) Q t I Q = I x t

25. 10 0 1 2 3 4 5 6 7 8 9

26. Force force = mass × acceleration (newton, N) (kilogram, kg) (m/s²) F a m F = m x a

27. 10 0 1 2 3 4 5 6 7 8 9

28. Transformers Vp = Np Vs Ns

29. 10 0 1 2 3 4 5 6 7 8 9