Student Login

Home›Chapters›Moving Charges and Magnetism PYQs›Biot-Savart Law & Circular Coils›Question 5

MHT CET 2026 (13 May, Shift 1) · Biot-Savart Law & Circular Coils

Biot-Savart Law & Circular Coils question from MHT CET 2026 (13 May, Shift 1)

Q5MHT CET 2026 · 13 MAY · SHIFT 1Easy

Biot-Savart Law & Circular Coils

An arc of a circle of radius R subtends an angle $\pi/2$ at the centre. It carries a current I. The magnetic field at the centre will be ( $\mu_0$ = permeability of free space)

Show answer and solution

Answer: (b)

Arc of angle $\theta$ : $B = \frac{\mu_0 I\theta}{4\pi R}$ .
$\theta = \frac{\pi}{2}$ : $B = \frac{\mu_0 I}{4\pi R}\cdot\frac{\pi}{2} = \frac{\mu_0 I}{8R}$
So the answer is (b).

Report a mistake

More questions on Biot-Savart Law & Circular Coils

A circular arc of wire of radius of curvature r subtends an angle of π/5 radian at its…MHT CET 2026 (20 Apr, Shift 2)
Two circular coils A and B are made from same wire but the radius of coil A is twice that…MHT CET 2026 (15 May, Shift 1)
Two circular coils A and B are made from the same wire but the radius of coil A is twice…MHT CET 2026 (13 May, Shift 2)
The magnetic field at the center of circular coil carrying current ' I ' for a single…MHT CET 2026 (17 Apr, Shift 1)
A long wire is bent into a circular coil of one turn and then into a circular coil of…MHT CET 2026 (15 Apr, Shift 2)
A small cube of side 1 mm is placed at the centre of a circular loop of radius 10 cm…JEE Main 2026 (6 Apr, Shift 1)
A particle carrying a charge equal to 100 times the charge of an electron is rotating one…MHT CET 2026 (14 May, Shift 2)
A thin ring of radius 'R' metre has charge 'q' coulomb uniformly spread on it. The ring…MHT CET 2026 (15 Apr, Shift 2)