If an Electron Is Accelerated from Rest Through a Potential

question 24

Multiple Choice

If an electron is accelerated from rest through a potential difference of 9.9 kV,what is its resulting speed? (e = 1.60 × 10^-19 C,k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C², ^m_el = 9.11 × 10^-31 kg)

• A)5.9 × 10⁷ m/s
• B)4.9 × 10⁷ m/s
• C)3.9 × 10⁷ m/s
• D)2.9 × 10⁷ m/s

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