AIPMT 2010 Prelims | Moving Charges and Magnetism Question 49 | Physics

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

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 2009

MCQ (Single Correct Answer)

-1

Under the influence of a uniform magnetic field, a charged particle moves with constant speed v in a circle of radius R. The time period of rotation of the particle

depends on R and not on v

is independent of both v and R

depends on both v and R

depends on v and not on R

AIPMT 2009

MCQ (Single Correct Answer)

-1

A galvanometer havings a coil resistance of 60 $$\Omega $$ shows full scale deflection when a current of 1.0 amp passes through it. It can be converted into an ammeter to read currents upto 5.0 amp by

putting in series a resistance of 15 $$\Omega $$

putting in series a resistance of 240 $$\Omega $$

putting in parallel a resistance of 15 $$\Omega $$

putting in parallel a resistance of 240 $$\Omega $$

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