NEET Physics: Questions 586 - 588 of 2098

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Question number: 586

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

In a moving coil galvanometer, the deflection of the coil θ is related to the electrical current i by the relation

Choices

Choice (4) Response

a.

itanθ

b.

iθ

c.

iθ2

d.

iθ

Question number: 587

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

The straight long conductors AOB and COD are perpendicular to each other and carry current i1 and i2 . The magnitude of the magnetic induction at point P at a distance ‘a’ from the point O in a direction perpendicular to the plane ACBD is

 Conductors AOB and COB explained above

Conductors AOB and COB Explained Above

The straight long conductors AOB and COD are perpendicular to each other and carry current i1 andi2. Magnetic field should be finding at point P at a distance ‘a’ from the point O in a direction perpendicular to the plane ACBD.

Choices

Choice (4) Response

a.

μ02πa(i12+i22)12

b.

μ02πai1i2i1+i2

c.

μ02πa(i1+i2)

d.

μ02πa(i1i2)

Question number: 588

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A closed coil consists of 500 turns on a rectangular frame of area 4.0 cm 2 and has a resistance of 50 ohm. The coil is kept with its plane perpendicular to a uniform magnetic field of 0.2 weber/meter 2. The amount of charge flowing through the coil if it is turned over (rotated through 180°) will be -

Choices

Choice (4) Response

a.

1.6 x 10 -19 C

b.

1.6 x 10 -9 C

c.

1.6 x 10 -2 C

d.

1.6 x 10 -3 C

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