Magnetism and Bohr Magneton – Rankers Physics

Magnetic Properties of Matter: Practice Problem & Solution

Consider the following statements: Statement (A): All magnetism is due to circulating currents i.e. there cannot be magnetic field without current. Statement (B):  The orbital magnetic moment of an electron in the ground state of a hydrogen atom is equal to one Bohr Magneton. Choose the correct option.
Statement (A) is correct while statement (B) is incorrect.
Statement (B) is correct while statement (A) is incorrect.
Both the statements are correct
Both the statements are incorrect

Solution Explained:

To solve this problem, we apply the core principles of Magnetic Properties of Matter. Understanding the underlying formula is key to arriving at the correct answer below:

Statement (A) is incorrect because elementary particles like electrons have intrinsic spin magnetic moments not due to actual circulating currents. Statement (B) is correct as \(\mu_l = 1 \mu_B\) for ground state.

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