AIPMT 2014 | Moving Charges and Magnetism Question 35 | Physics

Two identical long conducting wires $$AOB$$ and $$COD$$ are placed at right angle to each other, with one above other such that $$O$$ is their common point for the two. The wires carry $$I$$₁ and $$I$$₂ currents, respectively. Point $$P$$ is lying at distance f from $$O$$ along a direction perpendicular to the plane containing the wires. The magnetic field at the point $$P$$ will be

$${{{\mu _0}} \over {2\pi d}}\left( {{{{I_1}} \over {{I_2}}}} \right)$$

$${{{\mu _0}} \over {2\pi d}}\left( {{I_1} + {I_2}} \right)$$

$${{{\mu _0}} \over {2\pi d}}\left( {I_1^2 - I_2^2} \right)$$

$${{{\mu _0}} \over {2\pi d}}{\left( {I_1^2 + I_2^2} \right)^{1/2}}$$

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 63 English

NEET 2013 (Karnataka) Physics - Moving Charges and Magnetism Question 63 English

$$ - \overrightarrow F $$

$$3\overrightarrow F $$

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

$$\overrightarrow F $$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A long straight wire carries a certain current and produces a magnetic field 2 $$ \times $$ 10^$$-$$4 Wb m^$$-$$2 at a perpendicular distance of 5 cm from the wire. An electron situated at 5 cm from the wire moves with a velocity 10⁷ m/s towards the wire along perpendicular to it. The force experienced by the electron will be (charge on electron 1.6 $$ \times $$ 10^$$-$$19 C)

3.2 N

3.2 $$ \times $$ 10^$$-$$16 N

1.6 $$ \times $$ 10^$$-$$16 N

zero

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

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