MHT CET 2024 15th May Evening Shift | Moving Charges and Magnetism Question 5 | Physics

Two concentric circular coils A and B having radii 20 cm and 10 cm respectively lie in the same plane. The current in coil A is 0.5 A in anticlockwise direction. The current in coil B , so that net magnetic field at the common centre is zero, is

$0.5 \mathrm{~A}$ in anticlockwise direction.

0.25 A in anticlockwise direction.

0.25 A in clockwise direction.

0.125 A in clockwise direction.

MHT CET 2024 15th May Evening Shift

MCQ (Single Correct Answer)

-0

An electron is revolving in a circular orbit of radius $r$ in a hydrogen atom. The angular momentum of the electron is L . The relation between dipole moment (m) associated with it, gyromagnetic ratio ( R ) and L is

$\mathrm{m}=-\frac{\mathrm{L}}{\mathrm{R}}$

$\mathrm{m}=-\mathrm{RL}$

$\mathrm{m}=-\mathrm{RL}^2$

$\mathrm{m}=\frac{\mathrm{R}}{\mathrm{L}}$

MHT CET 2024 15th May Evening Shift

MCQ (Single Correct Answer)

-0

Three infinite straight wires $\mathrm{A}, \mathrm{B}$ and C carry currents as shown in figure. The resultant force on wire $B$ is directed

MHT CET 2024 15th May Evening Shift Physics - Moving Charges and Magnetism Question 5 English

towards A

towards C

perpendicular to the plane of page

upwards

MHT CET 2024 15th May Morning Shift

MCQ (Single Correct Answer)

-0

Two parallel wires separated by distance 'b' are carrying equal current ' $I$ ' in the same direction. The force per unit length of the wire is

$\frac{\mu_0}{4 \pi}\left(\frac{I}{b^2}\right)$

$\frac{\mu_0}{4 \pi}\left(\frac{\mathrm{I}^2}{\mathrm{~b}^2}\right)$

$\frac{\mu_0}{4 \pi}\left(\frac{\mathrm{I}^2}{b}\right)$

$\frac{\mu_0}{4 \pi}\left(\frac{2 I^2}{b}\right)$

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