KVPY2018PhysicsElectrostatics
One can define an alpha-volt ( α - V ) to be the energy acquired by an α -particle when it is accelerated by a potential of 1   V . For this problem, you may take a proton to be 2000 times heavier than an electron. Then,
Options
- A1 α - V = 1   e V / 4000
- B1 α - V = 2   e V
- C1 α · V = 8000   e V
- D1 α - V = 1 e V
Correct answer
B. 1 α - V = 2   e V
Step-by-step solution
An alpha-volt ( α - V ) is the energy acquired by an α -particle (charge 2 units) when accelerated by a potential difference of 1   V . ∴    1 α - V = q   ( Δ V ) . = 2 e × 1   V = 2   e V