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Grade 12 Exam  >  Grade 12 Tests  >  NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Grade 12 MCQ

NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Grade 12 MCQ


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5 Questions MCQ Test - NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop

NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop for Grade 12 2025 is part of Grade 12 preparation. The NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop questions and answers have been prepared according to the Grade 12 exam syllabus.The NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop MCQs are made for Grade 12 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop below.
Solutions of NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop questions in English are available as part of our course for Grade 12 & NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop solutions in Hindi for Grade 12 course. Download more important topics, notes, lectures and mock test series for Grade 12 Exam by signing up for free. Attempt NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop | 5 questions in 5 minutes | Mock test for Grade 12 preparation | Free important questions MCQ to study for Grade 12 Exam | Download free PDF with solutions
NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 1
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A circular loop of radius 3 cm is having a current of 12.5 A. The magnitude of magnetic field at a distance of 4 cm on its axis is

Detailed Solution for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 1


Here, I = 12.5 A, R = 3 cm = 3 x 10-2 m 
x = 4 cm = 4 x 10-2 m
∴ 

NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 2
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A straight wire carrying a current of 13 A is bent into a semi-circular arc of radius 2 cm as shown in figure. The magnetic field is 1.5 x 10-4 T at the centre of arc, then the magnetic field due to straight segment is

Detailed Solution for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 2

Since dl and r for each element of the straight segments are parallel. Therefore

Hence, B is also zero.

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NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 3
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A circular coil of wire consisting of 100 turns each of radius 9 cm carries a current of 0.4 A. The magnitude of magnetic field at the centre of the coil is

Detailed Solution for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 3

Here N = 100
R = 9 cm = 9 x 10-2 m and I = 0.4 A 
Now, 
 0.279 x 10-3 T = 2.7 9 x 10-4 T 

NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 4
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The magnitude of the magnetic field at the centre of the tightly wound 150 turn coil of radius 12 cm carrying a current of 2 A is
Detailed Solution for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 4

Here, N = 150, R = 12 cm = 12 x 10-2 m, I = 2 A 

= 1.57 x 10-3T = 15.7 x 10-4 T = 15.7 G

NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 5
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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
Detailed Solution for NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop - Question 5

Here, N = 90
R = 15 cm = 15 x 10-2m, B = 4 x 10-4 T
∵ B = μ0NI/2R 

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NCERT Based Test: Magnetic Field on the Axis of a Circular Current Loop MCQs with Answers

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