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Question

Gyromagnetic ratio is the ratio of magnetic moment μl to the orbital angular momentum (l). Its numerical value for an electron is given by

A
8.8 x 1012 C kg1
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B
8.8 x 1010 C kg1
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C
1.6 x 1019 C kg1
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D
6.67 x 1011 C kg1
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Solution

The correct option is B 8.8 x 1010 C kg1
The gyromagnetic ratio is constant.
For any charged particle its value is given by
μll=e2m
For electron m = me = 9.1 X 1031kg, e = 1.6 X 1019C,
μll =1.6×10192×9.1×1031=8.8×1010Ckg1.

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