AIPMT 2011 Mains | Moving Charges and Magnetism Question 39 | Physics

AIPMT 2011 Mains

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 2011 Mains

MCQ (Single Correct Answer)

-1

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 Mains

MCQ (Single Correct Answer)

-1

A square loop, carrying a teady current $$I$$, is placed in a horizontal plane near a long straight conductor carrying a steady current $$I$$₁ at a distance d from the conductor as shown in figure. The loop will experience
AIPMT 2011 Mains Physics - Moving Charges and Magnetism Question 49 English

AIPMT 2011 Mains Physics - Moving Charges and Magnetism Question 49 English

a net attractive force towards the conductor

a net repulsive force away from the conductor

a net torque acting upward perpendicular to the horizontal plane

a net torque acting downward normal to horizontal plane

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

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