NEET 2016 Phase 1 | Moving Charges and Magnetism Question 22 | Physics

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A long straight wire of radius $$a$$ carries a steady current $$I$$. The current is uniformly distributed over its cross-section. The ratio of the magnetic fields B and B', at radial distance $${a \over 2}$$ and 2$$a$$ respectively, from the axis of the wire is

$${1 \over 4}$$

$${1 \over 2}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A square loop ABCD carrying a current $$i$$, is placed near and coplanar with a long straight conductor XY carrying a current $$I$$, the net force on the loop will be NEET 2016 Phase 1 Physics - Moving Charges and Magnetism Question 66 English

NEET 2016 Phase 1 Physics - Moving Charges and Magnetism Question 66 English

$${{2{\mu _0}liL} \over {3\pi }}$$

$${{{\mu _0}liL} \over {2\pi }}$$

$${{2{\mu _0}li} \over {3\pi }}$$

$${{{\mu _0}li} \over {2\pi }}$$

AIPMT 2015

MCQ (Single Correct Answer)

-1

A proton and an alpha particle both enter a region of uniform magnetic field B, moving at right angles to the field B. If the radius of circular orbits for both the particles is equal and the kinetic energy acquired by proton is 1 MeV, the energy acquired by the alpha particle will be

1.5 MeV

1 MeV

4 MeV

0.5 MeV

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude

$${{{\mu _0}{n^2}e} \over r}$$

$${{{\mu _0}ne} \over {2r}}$$

$${{{\mu _0}ne} \over {2\pi r}}$$

Zero

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution