Q148 / 160 · TS EAMCET 2025 (03 May Shift 1) · Physics

The magnetic field due to a current carrying circular coil on its axis at a distance of $\sqrt{2} \mathrm{~d}$ from the centre of the coil is B. If d is the diameter of the coil, then the magnetic field at the centre of the coil is

A
18 B
Correct answer
B
27 B
C
3B
D
9B

Hence, the correct answer is option: 'B'.

Relevant Questions

Two long straight parallel wires carry currents of 8 A and 10 A in opposite directions. If the distance of separation between the wires is 904 May, 2025 (M)Magnetic Field
The magnetic field at a point P on the axis of a short bar magnet of magnetic moment M is B. If another short bar magnet of magnetic moment 03 May, 2025 (M)Magnetic Field
A solenoid of 1000 turns per metre has a core of material with relative permeability 400. The windings of the solenoid are insulated from th03 May, 2025 (E)Magnetic Field
A solenoid of length 50 cm and radius 10 cm has two closely wound layers of windings 100 turns each. If a current of 2.5 A is passing throug02 May, 2025 (M)Magnetic Field
Two identical wires, carrying equal currents are bent into circular coils and with 2 and 3 turns respectively. The ratio of the magnetic fie02 May, 2025 (E)Magnetic Field
A current of 4 A is passed through a square loop of side 5 cm made of a uniform manganin wire as shown in the figure. The magnetic field at 02 May, 2025 (E)Magnetic Field