An Electron Is Accelerated from Rest Through a Potential Difference

question 24

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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