what is the value of charge to mass ratio of electron
Mass-to-charge ratio Some fields use the charge-to-mass ratio (Q/m) instead, which is the multiplicative inverse of the mass-to-charge ratio. The 2014 CODATA recommended value for an electron is ​e⁄me = - 7011175882002400000♠1.758820024(11)×1011 C/kg.[2]
Electric current The consequence of this convention is that electrons, the charge carriers in metal wires and most other parts of electric circuits, flow in the opposite direction of conventional current flow in an electrical circuit.
Pi Ï€ is commonly defined as the ratio of a circle's circumference C to its diameter d:[9]
Exponentiation Any nonzero number raised to the 0 power is 1:[11]
Hundreds and thousands Hundreds and thousands used incorrectly instead of hundreds of thousands to mean "an indefinite but emphatically large number".
Standard deviation This means that the standard deviation is equal to the square root of the difference between the average of the squares of the values and the square of the average value. See computational formula for the variance for proof, and for an analogous result for the sample standard deviation.