According to your rules, 3 questions. Please answer all. Thank you. 2. Which of the following is NOT true about induced emf?A. It is caused by a constant magnetic field.B. It is directly proportional to induced current.C. It is always opposite to the direction of magnetic flux.D. It is only produced by the motion perpendicular to the field.9. The following are factors involved in the induced emf of a coil of wire EXCEPTA. The induced emf is directly proportional to N, the total number of turns in thecoil.B. The induced emf is directly proportional to A, the area of cross-section of thecoil.C. The induced emf is directly proportional to instant t, the time of changingmagnetic flux.D. The induced emf is directly proportional to B, the strength of the magnetic fieldin which the coil is rotating.10. Which of the following is NOT true about induced electric field?A. It is caused by the changing magnetic field.B. Its work or energy difference depends on path.C. Its field & E. dl is not equal to zero, therefore electric potential has nomeaning.D. Its force is conservative because it does net work in moving a charge overa closed path.11. The following are the similarities of electrostatic electric field and inducedelectric field EXCEPTA. their field lines form closed loops.B. their field lines never cross each other.C. their field exerts a force, F =qE on charged particle.D. their field is strong when the field lines are close together.

2. Which of the following is NOT true about induced emf? A. It is caused by a constant magnetic field. B. It is directly proportional to induced current. C. It is always opposite to the direction of magnetic flux. D. It is only produced by the motion perpendicular to the field.

2. Which of the following is NOT true about induced emf? A. It is caused by a constant magnetic field. B. It is directly proportional to induced current. C. It is always opposite to the direction of magnetic flux. D. It is only produced by the motion perpendicular to the field.

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter29: Sources Of The Magnetic Field

Section: Chapter Questions

Problem 25P

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

According to your rules, 3 questions. Please answer all. Thank you.

2. Which of the following is NOT true about induced emf?
A. It is caused by a constant magnetic field.
B. It is directly proportional to induced current.
C. It is always opposite to the direction of magnetic flux.
D. It is only produced by the motion perpendicular to the field.
9. The following are factors involved in the induced emf of a coil of wire EXCEPT
A. The induced emf is directly proportional to N, the total number of turns in the
coil.
B. The induced emf is directly proportional to A, the area of cross-section of the
coil.
C. The induced emf is directly proportional to instant t, the time of changing
magnetic flux.
D. The induced emf is directly proportional to B, the strength of the magnetic field
in which the coil is rotating.
10. Which of the following is NOT true about induced electric field?
A. It is caused by the changing magnetic field.
B. Its work or energy difference depends on path.
C. Its field & E. dl is not equal to zero, therefore electric potential has no
meaning.
D. Its force is conservative because it does net work in moving a charge over
a closed path.
11. The following are the similarities of electrostatic electric field and induced
electric field EXCEPT
A. their field lines form closed loops.
B. their field lines never cross each other.
C. their field exerts a force, F =qE on charged particle.
D. their field is strong when the field lines are close together.

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