NCERT

Important Physics formulas: part 1

Important Physics formulas: part 1: We all know the importance of important formulas in physics. It really help us to remember the whole idea of the chapter.

Electron=-1.602 19 × 10-19 C=9.11 × 10-31 kg

Proton=1.602 19 × 10-19 C=1.67 × 10-27 kg

Neutron=0 C=1.67 × 10-27 kg6.022 × 1023 atoms in one atomic mass unite is the elementary charge: 1.602 19 × 10-19 C

Potential Energy, velocity of electron: PE = eV = ½mv21V = 1J/C1N/C = 1V/m1J = 1 N·m = 1 C·V1 amp = 6.21 × 1018

electrons/second = 1 Coulomb/second1 hp = 0.756 kW1 N = 1 T·A·m1 Pa = 1 N/m2Power = Joules/second = I2R = IV [watts W]

Quadratic Equation:xbbaca=−±−242

Kinetic Energy [J]KEmv=122

Kirchhoff’s Rules

Kirchhoff’s Rules1. The sum of the currents entering a junctions is equal to the sum of the currents leaving the junction.2. The sum of the potential differences across all the elements around a closed loop must be zero.

MAGNETISM

André-Marie Ampére is credited with the discovery of electromagnetism, the relationship between electric currents and magnetic fields.Heinrich Hertz was the first to generate and detected electromagnetic waves in the laboratory.

 

Leave a Comment

Your email address will not be published. Required fields are marked *

*