Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 5 of 26
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Question number: 1
» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole
Question
current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 135° to the direction of the field |
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| b. | 0° to the direction of the field |
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| c. | 90° to the direction of the field |
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| d. | 45° to the direction of the field |
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Question number: 2
» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole
Question
A circular coil of radius 4 cm has 50 turns. In this coil a current of 2 A is flowing. It is placed in a magnetic field of 0.1 weber/m 2. The amount of work done in rotating it through 180° from its equilibrium position will be
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0.1 J |
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| b. | 0.4 J |
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| c. | 0.8 J |
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| d. | 0.2 J |
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Question number: 3
» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole
Question
A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment
Choices
| Choice (4) | Response | |
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| a. |
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| b. | M |
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| c. |
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| d. |
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Passage
Read the passage given below and answer the questions that follow:
A conducting wire is bent into a loop as shown in the figure. The segment AOB is parabolic given by the equation y 2 = 2x while segment BA is a straight line parallel to the y-axis.
The magnetic field in the region is B and the current in the wire is 2A.
Electric Current Carrying Loop Segment AOB
A conducting wire is bent into a loop as shown in figure. The segment AOB is parabolic and BA is straight line parallel to y-axis.
Question number: 4 (1 of 1 Based on Passage) Show Passage
» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole
Question
The torque on the loop will be
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 16 Nm |
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| b. |
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| c. |
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| d. | Zero |
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Question number: 5
» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole
Question
The magnetic moment of a current carrying circular coil is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Directly proportional to the length of the wire |
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| b. | Directly proportional to the square of the length of the wire |
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| c. | Inversely proportional to the square of the length of the wire |
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| d. | Inversely proportional to the length of the wire |
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