suppse two charges are kept on a flat  table and though there is an attraction between the charges, the frictional forece is preventing the charges to move(assumund coefficient of friction to be same at both the charges)

then suppose the magnitude of electric field is 2f   and the ,magnitude of friction at each charge is f , then is it sufficient to prevent the charges from moving towards each other or should there be a frictional force of 2f on each charge

i want complete explanation

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2f it magnitude of electric field or magnitude of electric force????