MHT CET 2024 16th May Evening Shift | Moving Charges and Magnetism Question 1 | Physics

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

$\frac{\mu_0 I}{2 R}$

$\frac{\mu_0 I}{8 R}$

$\frac{\mu_0 I}{4 R}$

$\frac{2 \mu_0 I}{5 R}$

MHT CET 2024 16th May Evening Shift

MCQ (Single Correct Answer)

-0

A current 'I' flows in anticlockwise direction in a circular arc of a wire having $\left(\frac{3}{4}\right)^{\text {th }}$ of circumference of a circle of radius R. The magnetic field ' $B$ ' at the centre of circle is ( $\mu_0=$ permeability of free space)

$\frac{\mu_0 \mathrm{I}}{3 \mathrm{R}}$ in upward direction

$\frac{\mu_0 I}{2 R}$ in downward direction

$\frac{3 \mu_0 \mathrm{I}}{8 \mathrm{R}}$ in downward direction

$\frac{3 \mu_0 \mathrm{I}}{8 \mathrm{R}}$ in upward direction

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

The magnetic induction along the axis of a toroidal solenoid is independent of

number of turns per unit length.

current passing through it.

radius of the toroidal solenoid.

permeability

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

Two coils P and Q each of radius R carry currents I and $\sqrt{8} \mathrm{I}$ respectively in same direction. Those coils are lying in perpendicular planes such that they have a common centre. The magnitude of the magnetic field at the common centre of the two coils is ( $\mu_0=$ permeability of free space)

$\frac{\mu_0 I}{2 R}$

$\frac{3 \mu_0 I}{2 R}$

$\frac{5 \mu_0 I}{2 R}$

$\frac{7 \mu_0 \mathrm{I}}{2 \mathrm{R}}$

MHT CET Subjects