Additional support material

Notes

Electricity

  • formula triangle
    charge= current × time
    Q= I × t
     
  • formula triangle
    voltage= current × resistance
    V= I × R
     
  • formula triangle
    energy transferred = charge × voltage
    E= Q × V
     
  • formula triangle
    electrical power = current × voltage
    P= I × V
     

Waves

  • formula triangle
    wave speed = frequency × wavelength
    v= f × λ
     
  • formula triangle
    refractive index =  sine of the angle of incidence 
     sine of the angle of refraction 
    n=  sin i 
     sin r 
     
  • formula triangle
    sine of critical angle =  1 
     refractive index 
    sin c=  1 
     n 
     
 
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