1.

Whodiscovered e//mfor electron? Andhow ?

Answer»

SOLUTION :J.J. Thomsonmeasuredthe RATIOOF electricalcharge (e ) tothemass ofelectron`(m_(e ) )` by usingcathoderay tubeand APPLYING electricaland magneticfieldperpendicularto eachotheraswellas tothe pathof elements
R.a. Milikan (1868 - 1953)deviseda methodknownas oildropexperiment (1906 -1914)todeteminethe chargeon theelectron.


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