In Bohr's atomic model, the electron is assumed to revolve in a circular orbit of radius 0 . 5   A…

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 2.2×106 m s-1. Then the current associated with the electron will be__________ ×10-2 mA. [Take π as 227

Solution

Time taken to revolve in circular orbit is T=2πω=2πrv=2×227×5×10-112.2×106=107×10-16 s

Now, current associated with the electron is I=eT=1.6×10-19107×10-16=1.12×10-3A
I=1.12 mA
Hence, the current is 112×102 mA.

Asked in: JEE Main 2021 (27 Jul Shift 1)

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