In Bohr's atomic model, the electron is assumed to revolve in a circular orbit of radius 0 . 5   A ∘ . If the speed of electron is 2 . 2 × 10 6   m   s - 1 . Then the current associated with the electron will be__________ × 10 - 2   mA . [Take π as 22 7

Step-by-step solution

Time taken to revolve in circular orbit is T = 2 π ω = 2 π r v = 2 × 22 7 × 5 × 10 - 11 2 . 2 × 10 6 = 10 7 × 10 - 16   s Now, current associated with the electron is I = e T = 1 . 6 × 10 - 19 10 7 × 10 - 16 = 1 . 12 × 10 - 3 A ⇒ I = 1 . 12   mA Hence, the current is 112 × 10 2   mA .