NEET Exam > NEET Questions > A tightly wound 90 turn coil of radius 15 cm ...
Start Learning for Free
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it is
- a)1.06 A
- b)2.44 A
- c)3.44 A
- d)4.44 A
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4...
Here, N = 90
R = 15 cm = 15 x 10-2m, B = 4 x 10-4 T
∵ B = μ0NI/2R
R = 15 cm = 15 x 10-2m, B = 4 x 10-4 T
∵ B = μ0NI/2R
Free Test
| FREE | Start Free Test |
Community Answer
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4...
**Given Information:**
- Radius of the coil, r = 15 cm = 0.15 m
- Magnetic field at the center of the coil, B = 4 x 10^(-4) T
**Formula Used:**
The formula used to calculate the magnetic field at the center of a coil is given by:
B = (μ₀ * n * I) / (2 * r)
Where:
- B is the magnetic field at the center of the coil
- μ₀ is the permeability of free space (4π x 10^(-7) T m/A)
- n is the number of turns in the coil
- I is the current flowing through the coil
- r is the radius of the coil
**Calculation:**
Using the formula mentioned above, we can rearrange it to solve for the current (I):
I = (2 * B * r) / (μ₀ * n)
Substituting the given values:
I = (2 * 4 x 10^(-4) T * 0.15 m) / (4π x 10^(-7) T m/A * 90)
Simplifying the expression:
I = (8 x 10^(-4) T m * 0.15 m) / (360π x 10^(-7) T m/A)
I = (1.2 x 10^(-4) T m²) / (360π x 10^(-7) T m/A)
I ≈ 1.06 A
Therefore, the current flowing through the coil is approximately 1.06 A. Hence, option 'A' is the correct answer.
- Radius of the coil, r = 15 cm = 0.15 m
- Magnetic field at the center of the coil, B = 4 x 10^(-4) T
**Formula Used:**
The formula used to calculate the magnetic field at the center of a coil is given by:
B = (μ₀ * n * I) / (2 * r)
Where:
- B is the magnetic field at the center of the coil
- μ₀ is the permeability of free space (4π x 10^(-7) T m/A)
- n is the number of turns in the coil
- I is the current flowing through the coil
- r is the radius of the coil
**Calculation:**
Using the formula mentioned above, we can rearrange it to solve for the current (I):
I = (2 * B * r) / (μ₀ * n)
Substituting the given values:
I = (2 * 4 x 10^(-4) T * 0.15 m) / (4π x 10^(-7) T m/A * 90)
Simplifying the expression:
I = (8 x 10^(-4) T m * 0.15 m) / (360π x 10^(-7) T m/A)
I = (1.2 x 10^(-4) T m²) / (360π x 10^(-7) T m/A)
I ≈ 1.06 A
Therefore, the current flowing through the coil is approximately 1.06 A. Hence, option 'A' is the correct answer.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer?.
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer?.
Solutions for A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? 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 A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 x 10-4 T at its centre. The current flowing through it isa)1.06 Ab)2.44 Ac)3.44 Ad)4.44 ACorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup