NEET Exam > NEET Questions > How much work done to rotate à magnet of dipo...
Start Learning for Free
How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)?
Most Upvoted Answer
How much work done to rotate à magnet of dipole moment m in a magnetic...
Calculation of Work Done in Rotating a Magnet in a Magnetic Field
Introduction
The work done in rotating a magnet in a magnetic field depends on the dipole moment of the magnet and the strength of the magnetic field. The work done can be calculated using the formula W = -mBcosθ, where W is the work done, m is the dipole moment, B is the magnetic field, and θ is the angle between the direction of the magnetic field and the direction of the dipole moment.
Given
The question does not provide the initial angle between the direction of the magnetic field and the direction of the dipole moment.
Solution
To calculate the work done in rotating a magnet of dipole moment m in a magnetic field B through 180 degrees, we can assume that the initial angle between the direction of the magnetic field and the direction of the dipole moment is 0 degrees.
Using the formula W = -mBcosθ, we can calculate the work done as follows:
W = -mBcos180
W = -mB(-1)
W = mB
Therefore, the work done in rotating a magnet of dipole moment m in a magnetic field B through 180 degrees is equal to 2MB.
Answer
The correct answer is (B) 2MB.
Introduction
The work done in rotating a magnet in a magnetic field depends on the dipole moment of the magnet and the strength of the magnetic field. The work done can be calculated using the formula W = -mBcosθ, where W is the work done, m is the dipole moment, B is the magnetic field, and θ is the angle between the direction of the magnetic field and the direction of the dipole moment.
Given
The question does not provide the initial angle between the direction of the magnetic field and the direction of the dipole moment.
Solution
To calculate the work done in rotating a magnet of dipole moment m in a magnetic field B through 180 degrees, we can assume that the initial angle between the direction of the magnetic field and the direction of the dipole moment is 0 degrees.
Using the formula W = -mBcosθ, we can calculate the work done as follows:
W = -mBcos180
W = -mB(-1)
W = mB
Therefore, the work done in rotating a magnet of dipole moment m in a magnetic field B through 180 degrees is equal to 2MB.
Answer
The correct answer is (B) 2MB.
Community Answer
How much work done to rotate à magnet of dipole moment m in a magnetic...
W=MB(cosø1-cosø2)
W=MB(cos0 -cos180)
W=MB[1-(-1)]
W=MB[1+1]
W=2MB
W=MB(cos0 -cos180)
W=MB[1-(-1)]
W=MB[1+1]
W=2MB
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)?
Question Description
How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)?.
How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)?.
Solutions for How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? defined & explained in the simplest way possible. Besides giving the explanation of
How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)?, a detailed solution for How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? has been provided alongside types of How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? theory, EduRev gives you an
ample number of questions to practice How much work done to rotate à magnet of dipole moment m in a magnetic field B through 180 degree? (A)mB/2 (B) 2MB (C)MB (D)3MB/2 answer is B how? (they are not given initial angle)? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup