Student Login

Home›Chapters›Moving Charges and Magnetism PYQs›Current Loop as a Magnetic Dipole›Question 13

MHT CET 2026 (20 May, Shift 1) · Current Loop as a Magnetic Dipole

Current Loop as a Magnetic Dipole question from MHT CET 2026 (20 May, Shift 1)

Q13MHT CET 2026 · 20 MAY · SHIFT 1Medium

Current Loop as a Magnetic Dipole

The relation between magnetic moment (M) of revolving electron of charge (e) and mass (m) having principle quantum number (n) is (h = Planck's constant)

Show answer and solution

Answer: (a)

For an orbiting electron $M = \frac{e}{2m}L$ .
Bohr's rule: $L = \frac{nh}{2\pi}$ .
$M = \frac{e}{2m}\cdot\frac{nh}{2\pi} = \frac{neh}{4\pi m}$
So the answer is (a) $\frac{M}{n} = \frac{eh}{4\pi m}$ .

Report a mistake

More questions on Current Loop as a Magnetic Dipole

A wire of length L is bent in the form of a circular coil and current ' i ' is passed…MHT CET 2026 (11 Apr, Shift 1)
A current carrying circular loop of radius 2 cm with unit normal n = (k + i)/(√(2)) is…JEE Main 2026 (8 Apr, Shift 2)
A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed…JEE Main 2026 (4 Apr, Shift 2)
A charge q is circulating at a constant speed v with a semicircular loop of radius r. The…MHT CET 2026 (12 May, Shift 1)
An insulated wire is wound so that it forms a flat coil with N = 200 turns. The radius of…JEE Main 2026 (4 Apr, Shift 1)
A 2 amp current is flowing through two different small circular copper coils having radii…NEET 2025
In hydrogen atom, an electron of charge 'e' revolves in an orbit of radius ' r ' with…MHT CET 2025 (23 Apr, Shift 2)
Let the current ' I ' be associated with an electron of charge ' e ' moving in a circular…MHT CET 2025 (23 Apr, Shift 1)