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Q.

The radius of first Bohr orbit in hydrogen atom is 0.5 Å and the speed of electron in this orbit is 2×106 m /s then the value of equivalent electric current will be

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a

1μA

b

1 mA

c

0.5 mA

d

2 mA

answer is B.

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Detailed Solution

i=ef=ev/2πr i=1⋅6×10−192×1062×3⋅14×5×10−11≈1⋅mA
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