Student Login

Home›Chapters›Moving Charges and Magnetism PYQs›Current Loop as a Magnetic Dipole›Question 1

MHT CET 2026 (13 Apr, Shift 2) · Current Loop as a Magnetic Dipole

Current Loop as a Magnetic Dipole question from MHT CET 2026 (13 Apr, Shift 2)

Q1MHT CET 2026 · 13 APR · SHIFT 2Easy

Current Loop as a Magnetic Dipole

The magnetic moments associated with two closely wound circular coils a and b of radius $r$ and $2r$ respectively are equal if (where $N_a, I_a$ and $N_b, I_b$ are number of turns and current in A and B respectively)

Show answer and solution

Answer: (c)

$m = NI\pi r^2$ .
$N_a I_a \pi r^2 = N_b I_b \pi (2r)^2$
$N_a I_a = 4N_b I_b$ , so the answer is (c).

Report a mistake

More questions on Current Loop as a Magnetic Dipole

A particle of charge ' q ' and mass ' m ' moves in a circular orbit of radius ' r ' with…MHT CET 2026 (18 Apr, Shift 2)
A rectangular coil of n turns has area A and it is placed in uniform magnetic field B. If…MHT CET 2026 (20 May, Shift 1)
Torque acting on a coil carrying current 'I' situated parallel to magnetic field of…MHT CET 2026 (16 Apr, Shift 1)
A uniform conducting wire of length '12a' and resistance R is wound up as a current…MHT CET 2026 (15 May, Shift 2)
A thin circular wire carrying current I has magnetic moment M. The shape of the wire is…MHT CET 2026 (20 Apr, Shift 2)
The ratio of magnetic field at the centre of the current carrying circular loop and its…MHT CET 2026 (18 Apr, Shift 1)
Two wires of same length are bent to form the circular loop with two turns and a square…MHT CET 2026 (17 Apr, Shift 2)
A circular coil of 'N' turns and diameter 'd' carries current 'I'. It is unwound and…MHT CET 2026 (15 Apr, Shift 1)