AIPMT 2010 Mains | Moving Charges and Magnetism Question 44 | Physics

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

A closely wound solenoid of 2000 turns and area of cross-section 1.5 $$ \times $$ 10^$$-$$4 m² carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 5 $$ \times $$ 10^$$-$$2 tesla making an angle of 30^o with the axis of the solenoid. The torque on the solenoid will be

3 $$ \times $$ 10^$$-$$3 N m

1.5 $$ \times $$ 10^$$-$$3 N m

1.5 $$ \times $$ 10^$$-$$2 N m

3 $$ \times $$ 10^$$-$$2 N m

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency $$f$$ Hz. The magnitude of magnetic induction at the center of the ring is

$${{{\mu _0}qf} \over {2\pi R}}$$

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

$${{{\mu _0}q} \over {2fR}}$$

$${{{\mu _0}q} \over {2\pi fR}}$$

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 volt range, the resistance required to be added will be

900 $$\Omega $$

1800 $$\Omega $$

500 $$\Omega $$

1000 $$\Omega $$

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 volt range, the resistance required to be added will be

900 $$\Omega $$

1800 $$\Omega $$

500 $$\Omega $$

1000 $$\Omega $$

PREVIOUS NEXT

NEET Subjects

Biology

Botany

Zoology

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