Find the best tutors and institutes for Class 12 Tuition
Electromagnetic Induction EXERCISES Solutions
- Q6.1(a): Predict the direction of induced current in the situation described by the following Fig. 6.15(a).
- Q6.1(b): Predict the direction of induced current in the situation described by the following Fig. 6.15(b).
- Q6.1(c): Predict the direction of induced current in the situation described by the following Fig. 6.15(c).
- Q6.1(d): Predict the direction of induced current in the situation described by the following Fig. 6.15(d).
- Q6.1(e): Predict the direction of induced current in the situation described by the following Fig. 6.15(e).
- Q6.1(f): Predict the direction of induced current in the situation described by the following Fig. 6.15(f).
- Q6.2(a): Use Lenz’s law to determine the direction of induced current in the situations described by Fig. 6.16: A wire of irregular shape turning into a circular shape;
- Q6.2(b): Use Lenz’s law to determine the direction of induced current in the situations described by Fig. 6.16: A circular loop being deformed into a narrow straight wire.
- Q6.3: A long solenoid with 15 turns per cm has a small loop of area (2.0 cm^{2}) placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 2.0 A to 4.0 A in 0.1 s, what is the induced emf in the loop while the current is changing?
- Q6.4(a): A rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the loop. What is the emf developed across the cut if the velocity of the loop is (1 cm s^{-1}) in a direction normal to the longer side of the loop? For how long does the induced voltage last in each case?
- Q6.4(b): A rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the loop. What is the emf developed across the cut if the velocity of the loop is (1 cm s^{-1}) in a direction normal to the shorter side of the loop? For how long does the induced voltage last in each case?
- Q6.5: A 1.0 m long metallic rod is rotated with an angular frequency of (400 rad s^{-1}) about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.5 T parallel to the axis exists everywhere. Calculate the emf developed between the centre and the ring.
- Q6.6(a): A horizontal straight wire 10 m long extending from east to west is falling with a speed of (5.0 m s^{-1}), at right angles to the horizontal component of the earth’s magnetic field, (0.30 \times 10^{-4} Wb m^{-2}). What is the instantaneous value of the emf induced in the wire?
- Q6.6(b): A horizontal straight wire 10 m long extending from east to west is falling with a speed of (5.0 m s^{-1}), at right angles to the horizontal component of the earth’s magnetic field, (0.30 \times 10^{-4} Wb m^{-2}). What is the direction of the emf?
- Q6.6(c): A horizontal straight wire 10 m long extending from east to west is falling with a speed of (5.0 m s^{-1}), at right angles to the horizontal component of the earth’s magnetic field, (0.30 \times 10^{-4} Wb m^{-2}). Which end of the wire is at the higher electrical potential?
- Q6.7: Current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emf of 200 V induced, give an estimate of the self-inductance of the circuit.
- Q6.8: A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 s, what is the change of flux linkage with the other coil?
Chapters in CBSE - Class 12 Physics
- Electric Charges and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Moving Charges and Magnetism
- Magnetism and Matter
- Alternating Current
- Electromagnetic Waves
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics
- Communication Systems
Top Tutors who teach Electromagnetic Induction
Top Tutor
Dwarka Sector 1, Delhi
13 yrs of
Exp
1 student
501 hrs of classes completed
1000
per hour
Online Classes
I have been teaching Class 12 Mathematics for years, helping students understand difficult concepts with simple explanations and step-by-step guidance. My focus is on making math easy—especially chapters like Calculus, Matrices, Determinants, Vectors, and 3D Geometry. I provide regular practice, chapter-wise tests, and personalized feedback so students know exactly where to improve. Many of my students have gained confidence and improved their scores through clear concepts and exam-oriented preparation.
Top Tutor
Whitefield, Bangalore
20 yrs of
Exp
18 students
795 hrs of classes completed
1500
per hour
Online Classes
Student's Home
Tutor's home
I am a Physics educator with 24+ years of teaching experience, specializing in CBSE, ISC, State Boards, and Class 12 Physics. Over the years, I have taught 100,000+ students, helping them build strong conceptual foundations and achieve excellent results in Board examinations as well as competitive entrance tests. My approach to teaching is simple: make every concept easy to understand, regardless of a student's current level. I focus on building strong fundamentals first, followed by numerical problem-solving, derivations, practical applications, and exam-oriented preparation. This enables students to perform confidently in both Board examinations and entrance exams like JEE Main and NEET. My classes include: Complete Class 12 Physics syllabus Chapter-wise concept building and numericals Board-oriented derivations and theory preparation Previous Years' Questions (PYQs) and sample papers Regular tests, assignments, and performance analysis Personalized doubt-solving and revision sessions Premium study materials and handwritten notes Every student learns differently, so I adapt my teaching style to suit each student's pace and learning needs. My objective is not only to help students score excellent marks in Class 12 but also to develop a deep understanding of Physics that prepares them for future academic success.
He made physics simple for me. A good teacher and he thoroughly explains every concept before moving to a new topic.
Top Tutor
Karampura, Delhi
10 yrs of
Exp
1 student
2500
per hour
Online Classes
Student's Home
I teach and help students to achieve immediate and long term goals. My experience as a personal tutor and the founder of an online educational startup 'MinDely' has helped him gain knowledge of child psychology and understanding students needs and takes measures accordingly. I plan the lessons as per the students ability to cope up and moreover upon their needs. My teaching technique is student friendly and easy to understand which helps students understand it better. Weekly test conducted by him helps the parents to know the students performance.
Awesome, Sir is knowledgeable and experienced he keeps his lessons engaging, effective and fun highly recommended.
Top Tutor
Sector 19, Noida
3 yrs of
Exp
3 students
613 hrs of classes completed
600
per hour
Online Classes
• 3+ years of teaching experience. • teaching online tuitions of Mathematics for Class 10-12th. • pursued M.Sc. Mathematics from University of Delhi & B.Sc. Mathematical Sciences from University of Delhi. Passionate about solving mathematical problems and I have helped many students to overcome the fear of Maths.
Palak Ma’am is a dedicated and passionate tutor. Her way of teaching is structured and easy to follow. We’ve noticed positive academic growth and better discipline in our child’s study habits. She ensures that every concept is well understood before moving on, which has built our child’s confidence in maths. We truly appreciate her commitment and personal attention to each student’s progress.
Top Tutor
Sector 54 Suncity, Gurgaon
8 yrs of
Exp
1185 hrs of classes completed
800
per hour
Online Classes
Tutor's home
I have a varied experience of over 16 years and have enjoyed all roles as a writer, editor, banker, business analyst, teacher and marketer. I love a challenge, and during the course of my career, I took up English Language classes for working professionals. My classes are learner-centric and interactive, packed with activities, games and exercises that draw learners out of their shells and infuse them with confidence. Students are encouraged to think, raise questions, absorb new vocabulary and finally adopt the language as their own. My ability to connect and engage with students from all sections make my classes friendly, approachable and non-intimidating. My varied work experience across sectors further adds to my understanding of job and situation requirements.
