What is stopping potential​

Explanation:

The stopping voltage (or stopping potential) refers to the voltage difference required to stop electrons from moving between plates and creating a current in the photoelectric experiment. ... The product of the charge on an electron and the stopping voltage gives us the maximum kinetic energy of that ejected electron.When the voltage equals the stopping potential, we know that the KE fo the ejected electrons just equals the potential energy at the collector or… KE = PE hf - φ = qV. This equation is very useful. For light shining on the metal, there is a minimum “cutoff” frequency before the ejected electrons have any KE.

1/0.14nm = 10^10/1.4 a lot

grav forces affect all objects magnetic forces affect magnetic objects and electric currents