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Read: NCERT Class 12 Physics Solutions
Read: CBSE Class 12 Physics Syllabus 2023-24
Here in this article, you will find the NCERT solutions for Class 12 Physics Moving Charges and Magnetism. The objective is to help students understand the pattern of answering the question as per the CBSE's latest marking scheme. CBSE.jagranjosh.com has provided you with NCERT solutions for 12th-grade math and science subjects. Some questions from this chapter are given here. To get the complete solutions, download the PDF attached to this article.
Read: NCERT Class 12 Rationalised Content
Moving Charges and Magnetism NCERT Solutions
Q. A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?
Sol.
Given:
N = 100
R = 8cm
I = 0.4 A
By the formula
Substitution yields
B = 3.1x10-4 T
Q. A long straight wire carries a current of 35 A. What is the magnitudeof the field B at a point 20 cm from the wire?
Sol.
Given:
I = 35 A
x = 20 cm
Let us consider an Amperian loop of radius equal to x, i.e. 20 cm
Therefore by formula,
Solving for B
B = 3.5x10-5 T
Q. A long straight wire in the horizontal plane carries a current of 50 Ain north to south direction. Give the magnitude and direction of B at a point 2.5 m east of the wire.
Sol.
Given:
I = 50 A
R = 2.5 m
Using the above formula
B = 4x10-6 T
Direction is vertical up.
NCERT Rationalised Content Chapter 3: Moving Charges and Magnetism
|
Chapter 4: Moving Charges and Magnetism | 135 | Table 4.1 |
| 140–142 | 4.4.1 Velocity Selector | |
|
152–153 | 4.4.2 Cyclotron 4.8.2 The Toroid | |
| 162–163 | 4.10.3 The Magnetic | |
|
| Dipole Moment of a | |
|
| Revolving Electron | |
| 170–172 | Exercises 4.14–4.28 |
CBSE Class 12 Physics Updated Question Paper Design 2023-24
| Typology of Questions | Total Marks | Approximate % |
| Remembering: Exhibit memory of previously learned material by recalling facts, terms, basic concepts, and answers. Understanding: Demonstrate understanding of facts and ideas by organising, comparing, translating, interpreting, giving descriptions, and stating main ideas. | 27 | 38 |
| Applying: Solve problems to new situations by applying acquired knowledge, facts, techniques and rules in a different way. | 22 | 32 |
| Analysing: Examine and break information into parts by identifying motives or causes. Make inferences and find evidence to support generalisations. Evaluating: Present and defend opinions by making judgments about information, validity of ideas, or quality of work based on a set of criteria. Creating: Compile information together in a different way by combining elements in a new pattern or proposing alternative solutions. | 21 | 30 |
| Total | 70 | 100 |
| Practical | 30 |
|
| Gross Total | 100 |
|
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