Physics Formulas for CBSE Class 10 Students ... The important numerical and derivation formulas from optics, electricity, power etc., are given here. For Class 10 students, this topic is very ...

Power is measured in watts (W), energy in joules (J) and time in seconds (s). 1 W = 1 J/s (1 watt is 1 joule per second.) Electrical power can be calculated using the equation.