AIPMT 2012 Prelims | Moving Charges and Magnetism Question 40 | Physics

An alternating electric field, of frequency $$v$$, is applied across the does (radius = R) of a cyclotron that is being used to accelerate protons (mass = m). The operating magnetic field (B) used in the cyclotron and the kinetic energy (K) of the proton beam, produced by it, are given by

$$B = {{m\upsilon } \over e}$$ and $$K = 2m{\pi ^2}{\upsilon ^2}{R^2}$$

$$B = {{2\pi m\upsilon } \over e}$$ $$K = {m^2}\pi \upsilon {R^2}$$

$$B = {{2\pi m\upsilon } \over e}$$ $$K = 2m{\pi ^2}{v^2}{R^2}$$

$$B = {{m\upsilon } \over e}$$ $$K = {m^2}\pi \upsilon {R^2}$$

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

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

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

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

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

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampare range. The value (in ohm) of neccessary shunt will be

0.001

0.01

0.05

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 53 English

AIPMT 2011 Mains Physics - Moving Charges and Magnetism Question 53 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

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