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Linear Algebra: A Modern Introduction

A 250 -Turn rectangular coil of length 2.1 {~cm} and width 1.2

Linear Algebra: A Modern Introduction 4 by David Poole

Linear Algebra: A Modern Introduction 4 Edition

Chapter 1: Chapter 1

170 questions

Chapter 2: Chapter 2

235 questions

Chapter 3: Chapter 3

382 questions

Chapter 4: Chapter 4

357 questions

Chapter 5: Chapter 5

203 questions

Chapter 6: Chapter 6

310 questions

Chapter 7: Chapter 7

255 questions

Question

Medium

Solving time: 2 mins

A 250 -Turn rectangular coil of length $2.1 cm$ and width $1.25 cm$ carries a current of $85 μ A$ and subjected to a magnetic field of strength $0.85 T$ . Work done for rotating the coil by $18 0^{\circ}$ against the torque is:

9.1 μ J

4.55 μ J

2.3 μ J

1.15 μ J

Views: 5,860 students

Updated on: Jun 23, 2023

Book:

Linear Algebra: A Modern Introduction

Exam:

NEET 2017

Found 7 tutors discussing this question

Camila Discussed

A 250 -Turn rectangular coil of length

2.1 cm

and width

1.25 cm

carries a current of

85 μ A

and subjected to a magnetic field of strength

0.85 T

. Work done for rotating the coil by

18 0^{\circ}

against the torque is:

9 mins ago

Discuss this question LIVE

9 mins ago

Text solutionVerified

W = MB (cos θ_{1} - cos θ_{2})

When it is rotated by angle

18 0^{\circ}

then

W W = 2 MB = 2 (N I A) B = 2 \times 250 \times 85 \times 1 0^{- 6} [1.25 \times 2.1 \times 1 0^{- 4}] \times 85 = 9.1 μ J

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Question Text	A 250 -Turn rectangular coil of length $2.1 cm$ and width $1.25 cm$ carries a current of $85 μ A$ and subjected to a magnetic field of strength $0.85 T$ . Work done for rotating the coil by $18 0^{\circ}$ against the torque is:
Updated On	Jun 23, 2023
Topic	Magnetism and Matter
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 12
Upvotes	1179
Avg. Video Duration	9 min

A 250 -Turn rectangular coil of length $2.1 cm$ and width $1.25 cm$ carries a current of $85 μ A$ and subjected to a magnetic field of strength $0.85 T$ . Work done for rotating the coil by $18 0^{\circ}$ against the torque is:

Text solutionVerified

Filo tutor solutions (12)

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Text solutionVerified

Filo tutor solutions (12)

Questions from NEET 2017 - PYQs

Practice questions from Linear Algebra: A Modern Introduction

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A 250 -Turn rectangular coil of length $2.1 cm$ and width $1.25 cm$ carries a current of $85 μ A$ and subjected to a magnetic field of strength $0.85 T$ . Work done for rotating the coil by $18 0^{\circ}$ against the torque is: