NEET 2013 (Karnataka) | Moving Charges and Magnetism Question 41 | Physics

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A circular coil ABCD carrying a current 'i' is placed in a uniform magnetic field. If the magnetic force on the segment AB is $$\overrightarrow F $$, the force on the remaining segment BCDA is

NEET 2013 (Karnataka) Physics - Moving Charges and Magnetism Question 67 English

NEET 2013 (Karnataka) Physics - Moving Charges and Magnetism Question 67 English

$$ - \overrightarrow F $$

$$3\overrightarrow F $$

$$-$$$$3\overrightarrow F $$

$$\overrightarrow F $$

NEET 2013

MCQ (Single Correct Answer)

-1

When a proton is released from rest in a room, it starts with an initial acceleration $$a$$₀ towards west. When it is projected towards north with a speed $$v$$₀ it moves with an initial acceleration 3$$a$$₀ towards west. The an initial accelearation 3a₀ towards west. The an initial acceleration 3$$a$$₀ toward west. The electric and magnetic fields in the room are

$${{m{a_0}} \over e}$$ east, $${{3m{a_0}} \over {e{v_0}}}$$ up

$${{m{a_0}} \over e}$$ east, $${{3m{a_0}} \over {e{v_0}}}$$ down

$${{m{a_0}} \over e}$$ west, $${{2m{a_0}} \over {e{v_0}}}$$ up

$${{m{a_0}} \over e}$$ west, $${{2m{a_0}} \over {e{v_0}}}$$ down

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field. What should be the energy of an $$\alpha $$-particle to describe a circle of same radius in the same field?

2 MeV

1 MeV

0.5 MeV

4 MeV

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

Two similar coils of radius R are lying concentrically with their planes at right angles to each other. The currents flowing in them are $$I$$ and 2$$I$$, respectively. The resultant magnetic field induction at the centre will be

$${{\sqrt 5 {\mu _0}I} \over {2R}}$$

$${{\sqrt 5 {\mu _0}I} \over R}$$

$${{{\mu _0}I} \over {2R}}$$

$${{{\mu _0}I} \over R}$$

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