AIIMS Physics: Questions 463 - 465 of 500

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Question number: 463

» Magnetic Effects of Current and Magnetism » Ampere's Law

MCQ▾

Question

A long straight wire (radius=5.0mm) carries a constant current distributed uniformly over a cross section perpendicular to the axis of the wire. If the current density is 200Am2 . The magnitudes of the magnetic field at

(a) 3.0 mm from the axis of the wire and

(b) 6.0 mm from the axis of the wire is: -

Choices

Choice (4) Response
a.

12π×108T,5π3×107T

b.

6π×108T,3π2×107T

c.

π×108T,π2×108T

d.

π×104T,5π2×107T

Question number: 464

» Atoms and Nuclei » Composition and Size of Nucleus

Appeared in Year: 2002

MCQ▾

Question

A radioactive nucleus decay as follows XαX1βX2αX3γX4

if the atomic number and the mass number of X are 72 and 180 then the mass number and atomic number of X4 are – [MP PET]

Choices

Choice (4) Response
a.

171, 69

b.

172, 68

c.

172, 70

d.

172, 69

Question number: 465

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

Appeared in Year: 2003

MCQ▾

Question

A generator produces a voltage V=240sin120tvolt where V is in volts and t in second. The frequency and r. m. s voltage are – [RPMT]

Choices

Choice (4) Response
a.

754Hzand170V

b.

19Hzand170V

c.

60Hzand240V

d.

19Hzand120V

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