calculate the magnitude electric field intensity which can just balance a proton of mass 1.67x10^-27kg
Kindly refer to the link given below for an answer to a similar query :
https://www.meritnation.com/ask-answer/question/how-to-calculate-the-magnitude-of-an-electric-field-which-ca/electric-charges-and-fields/2355226
https://www.meritnation.com/ask-answer/question/how-to-calculate-the-magnitude-of-an-electric-field-which-ca/electric-charges-and-fields/2355226