Energy in the nth level when the Bohr model is applied to a charge moving in a magnetic field

1. A.
   $\frac{nhqB}{4\pi m}$
2. B.
   $\frac{nhqB}{2\pi m}$
3. C.
   $\frac{nhqB}{\pi m}$
4. D.
   $\frac{2nhqB}{\pi m}$

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1. A.
   $\frac{qBh}{\pi m}$
2. B.
   $\frac{q^{2}{\text{ }B}^{2}{\text{ }h}^{2}}{4\pi\text{ }m}$
3. C.
   $\frac{qBh}{2\pi\text{ }m}$
4. D.
   $\frac{2qBh}{\pi m}$

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1. A.
   $\dfrac{2nhqB}{\pi m}$
2. B.
   $\dfrac{nhqB}{\pi m}$
3. C.
   $\dfrac{nhqB}{2\pi m}$
4. D.
   $\dfrac{nhqB}{4\pi m}$

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1. A.
   $\dfrac{2nhqB}{\pi m}$
2. B.
   $\dfrac{nhqB}{2\pi m}$
3. C.
   $\dfrac{nhqB}{4\pi m}$
4. D.
   $\dfrac{nhqB}{\pi m}$

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