Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (AIIMS Physics): Questions 1 - 3 of 3

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Question number: 1

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

Appeared in Year: 2006

MCQ▾

Question

Circular loop of a wire and a long straight wire carry currents IC and Ie, respectively as shown in figure. Assuming that these are placed in the same plane, the magnetic fields will be zero at the centre of the loop when the separation H is – [AIIMS]

A circular loop of a wire and a long straight wire

A Circular Loop of a Wire and a Long Straight Wire

In figure a circular loops of a wire and a long straight wire carry current IC and i.e., respectively are shown.

Choices

Choice (4) Response

a.

IeRICπ

b.

πIcIeR

c.

ICRIeπ

d.

IeπICR

Question number: 2

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

Appeared in Year: 2003

MCQ▾

Question

A rectangular loop carrying a current i1 is situated near a long straight wire carrying a steady current i2 . The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure. Then the current loop will – [AIIMS]

A rectangular loop situated near a straight wire

A Rectangular Loop Situated Near a Straight Wire

In figure a rectangular loop carrying current i1 is situated near a long straight wire carrying a steady current i2. The wire is parallel to one of the side of loop.

Choices

Choice (4) Response

a.

Move away from the wire

b.

Rotate about an axis parallel to the wire.

c.

Remain stationary.

d.

Move towards the wire

Question number: 3

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

Appeared in Year: 1990

MCQ▾

Question

The radius of circular loop is r and a current i is flowing in it. The equivalent magnetic moment will be: [AIPMT, AIIMS 98]

Choices

Choice (4) Response

a.

2πir

b.

iπr2

c.

ir2

d.

ir

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