Practice question
Question
What is the charge-to-mass ratio of an electron as determined by experiments involving cathode rays?
Explanation
The charge-to-mass ratio of an electron was measured using a cathode ray tube with electric and magnetic fields applied perpendicularly. The value is calculated as e/m_e = 1.758820 × __10POWâ‚â‚__C kg^{-1 .
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