Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 24 - 26 of 26

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Question number: 24

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

wire of length L has magnetic moment M. It is bent in to semicircular arc. The new magnetic moment is,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 25

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

A current of 30 A is flowing in a vertical straight wire. If the horizontal component of earth’s magnetic field is 2 x 10 -5 tesla then the distance of null point from wire is –

Choices

Choice (4) Response

a.

0.3 m

b.

0.3 cm

c.

0.3 mm

d.

0.9 m

Question number: 26

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

Appeared in Year: 2017

MCQ▾

Question

A long solenoid of diameter Equation has Equation turn per meter. At the centre of the solenoid, a coil of Equation turns and radius Equation is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to Equation from Equation in Equation . If the resistance of the coil is Equation the total charge flowing through the coil during this time is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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