An Electron Is Accelerated from Rest Through a Potential Difference

question 58

Multiple Choice

An electron is accelerated from rest through a potential difference.After acceleration the electron has a wavelength of 880 nm.What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10^-34 J ∙ s,m_electron = 9.11 × 10^-31 kg,e = 1.6 10^-19 C)

• A)1.9 × 10^-6 V
• B)1.7 × 10^-6 V
• C)2.2 × 10^-6 V
• D)2.5 × 10^-6 V

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