An electron in a TV picture tube is accelerated through a potential difference of 29 kV before it hits the screen.What is the kinetic energy of the electron in electron volts? (1 eV = 1.6 × 10−¹⁹ J) A) 2.9 × 10⁴ eV B) 4.6 × 10−¹⁵ eV C) 4.6 × 10−²² eV D) 18.1 × 10²² eV E) 4.5 × 10−¹⁵ eV

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Kinetic energy = (charge) × (potential difference)= (1.6 × 10−¹⁹ C) × (29 × 10³ V)= 4.6 × 10−¹⁵ J= 4.6 × 10−¹⁵ J / (1.6 × 10−¹⁹ J/eV)= 2.9 × 10⁴ eV

An Electron in a TV Picture Tube Is Accelerated Through