AIPMT 2011 Mains | Moving Charges and Magnetism Question 45 | Physics

A galvanometer of resistance, G, is shunted by a resistance S ohm. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is

$${G \over {(S + G)}}$$

$${{{S^2}} \over {\left( {S + G} \right)}}$$

$$\left( {{{SG} \over {S + G}}} \right)$$

$${{{G^2}} \over {(S + G)}}$$

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A current carrying closed loop in the form of a right angle isosceles triangle ABC is placed in uniform magnetic field acting along AB. If the magnetic force on the arm BC is $$\overrightarrow {F,} $$ the force on the arm AC is

AIPMT 2011 Prelims Physics - Moving Charges and Magnetism Question 58 English

AIPMT 2011 Prelims Physics - Moving Charges and Magnetism Question 58 English

$$ - \sqrt 2 \,\overrightarrow F $$

$$-$$ $$\,\overrightarrow F $$

$$\,\overrightarrow F $$

$$\sqrt 2 \,\overrightarrow F $$

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron

will turn towards right of direction of motion

speed will decrease

speed will increase

will turn towards left of direction of motion

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

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