NEET 2022 Phase 1 | Electromagnetic Induction Question 5 | Physics

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

A square loop of side 1 m and resistance 1 $$\Omega$$ is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is

2 weber

0.5 weber

1 weber

Zero weber

NEET 2021

MCQ (Single Correct Answer)

-1

Two conducting circular loops of radii R₁ and R₂ are placed in the same plane with their centres coinciding. If R₁ >> R₂, the mutual inductance M between them will be directly proportional to :

$${{R_2^2} \over {{R_1}}}$$

$${{{R_1}} \over {{R_2}}}$$

$${{{R_2}} \over {{R_1}}}$$

$${{R_1^2} \over {{R_2}}}$$

NEET 2019

MCQ (Single Correct Answer)

-1

A 800 turn coil of effective area 0.05 m² is kept. perpendicular to a magnetic filed 5 × 10^–5 T. When the plane of the coil is rotated by 90^o around any of its coplanar axis in 0.1 s, the emf induced in the coil will be :

0.2 V

0.02 V

2 V

2 $$ \times $$ 10^-3 V

NEET 2019

MCQ (Single Correct Answer)

-1

In which of the following devices, the eddy current effect is not used?

magnetic braking in train

electromagnet

electric heater

induction furnace

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