TG EAPCET 2024 (Online) 9th May Morning Shift | Electromagnetic Induction Question 12 | Physics

Two circular coils of radii $r_1$ and $r_2\left(r_1 \ll r_2\right)$ are placed coaxially with their centres coinciding. The mutual inductance of the arrangement is

$\frac{\mu_0 \pi \pi_2^2}{2 r_1}$

$\frac{\mu_0 \pi r_1 r_2}{2\left(r_1+r_2\right)}$

$\frac{\mu_0 \pi r_1^2}{2 r_2}$

$\frac{\mu_0 \pi\left(r_1+r_2\right)}{2 r_1 r_2}$

TS EAMCET 2023 (Online) 14th May Evening Shift

MCQ (Single Correct Answer)

-0

A conducting rod is moving towards right with a velocity $v$ in a uniform magnetic field $B$. If the direction of induced current $i$ is as shown in the figure, then the direction of $B$ is

TS EAMCET 2023 (Online) 14th May Evening Shift Physics - Electromagnetic Induction Question 12 English

in the plane of the paper towards right

in the plane of the paper towards left

perpendicular to the plane of the paper and into the paper

perpendicular to the plane of the paper and out of the paper

TS EAMCET 2023 (Online) 14th May Morning Shift

MCQ (Single Correct Answer)

-0

Metal detector works on the principle of

Ohm's law

Coulomb's law

Electromagnetic induction

Stefan's law of radiation

TS EAMCET 2023 (Online) 14th May Morning Shift

MCQ (Single Correct Answer)

-0

A copper disc of radius 0.1 m rotates about an axis passing through its centre and perpendicular to its plane with 10 revolutions per second in a uniform transverse magnetic field of 0.1 T . The emf induced across the radius of the disc is

$\frac{\pi}{10} \mathrm{~V}$

$\frac{2 \pi}{10} \mathrm{~V}$

$10 \pi \mathrm{mV}$

$20 \pi \mathrm{mV}$

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