Saved Bookmarks
| 1. |
In a hydrogen atom, the electron is moving in a circular orbit of radius 5.3 x 10⁻¹¹ m with a constant speed of 2.2 x 10⁻⁶ ms⁻¹. The electric current formed due to the motion of electron is _______ (A) 1.12 A (B) 1.06 mA (C) 1.06 A (D) 1.12 mA |
|
Answer» udent,I would suggest a small CORRECTION. Speed of electron can't be 2.2x10⁻⁶ m/s, it should have been 2.2x10⁶ m/s.◆ Answer - (B)I = 1.06 mA● EXPLANATION -Electric current formed due to MOTION of e- is -I = Q / tI = e / (2πr/v)I = e.v / 2πrSubstitute values,I = 1.6×10^-19 × 2.2×10^6 / (2 × 3.14 × 5.3×10^-11)I = 1.058×10^-3 AI = 1.06 mATherefore, electric current formed due to the motion of electron is 1.06 mA.Thanks dear... |
|