help please 1- Faraday's law state thata. emf is induced in a loop as it moves through an electric fieldb. the induced emf produces a current whose magnetic field opposes the originalchangec. the induced emf is proportional to the rate of change of magnetic flux2- A velocity of a slid bar conductor is v to the right on some conducting rails asshown below. If a uniform magnetic field is directed and its perpendicular to thebar. Answer the two following questions:(i) Will the light bulb “tum on" in this case? and (ii) How is the magnetic fluxthrough the conducting loop changing, if at all, as the bar slides to the right?a) no, the magnetic flux remains constantb) yes, the magnetic flux decreasesc) no, the magnetic flux increasesd) yes, the magnetic flux increasese) yes, the magnetic flux remains constant3- If a coil with N turns placed within a magnetic field which have a density of B .The angle of the plane of the coil with respect to the magnetic field is p. Whichof the following changes will generate an induced emf in the coil?a) B is decreasedb) A is increasedc) o is decreasedd) any of the above choicese) none of the above choices4- If the magnetic field is changed from 2.8 to 1.0 T within 10 seconds, calculate theinduced with a 10 cm by 20 cm rectangular conductor which is positionedperpendicular to the field?5- A circular loop in the plane of the paper lies in a 3.0 T magnetic field pointinginto the paper. The loop's diameter changes from 100 cm to 60 cm in 0.5 sa- What is the magnitude of the average induced emf?b- What is the direction of the induced current?c- If the coil resistance is 0.052, what is the average induced current?

discuss about the faraday's law.

1- Faraday's law state that a. emf is induced in a loop as it moves through an electric field b. the induced emf produces a current whose magnetic field opposes the original change c. the induced emf is proportional to the rate of change of magnetic flux

1- Faraday's law state that a. emf is induced in a loop as it moves through an electric field b. the induced emf produces a current whose magnetic field opposes the original change c. the induced emf is proportional to the rate of change of magnetic flux

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 90CP: A rectangular copper loop of mass 100 g and resistance 0.2 is in a region of uniform magnetic field...

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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

help please

1- Faraday's law state that
a. emf is induced in a loop as it moves through an electric field
b. the induced emf produces a current whose magnetic field opposes the original
change
c. the induced emf is proportional to the rate of change of magnetic flux
2- A velocity of a slid bar conductor is v to the right on some conducting rails as
shown below. If a uniform magnetic field is directed and its perpendicular to the
bar. Answer the two following questions:
(i) Will the light bulb “tum on" in this case? and (ii) How is the magnetic flux
through the conducting loop changing, if at all, as the bar slides to the right?
a) no, the magnetic flux remains constant
b) yes, the magnetic flux decreases
c) no, the magnetic flux increases
d) yes, the magnetic flux increases
e) yes, the magnetic flux remains constant
3- If a coil with N turns placed within a magnetic field which have a density of B .
The angle of the plane of the coil with respect to the magnetic field is p. Which
of the following changes will generate an induced emf in the coil?
a) B is decreased
b) A is increased
c) o is decreased
d) any of the above choices
e) none of the above choices
4- If the magnetic field is changed from 2.8 to 1.0 T within 10 seconds, calculate the
induced with a 10 cm by 20 cm rectangular conductor which is positioned
perpendicular to the field?
5- A circular loop in the plane of the paper lies in a 3.0 T magnetic field pointing
into the paper. The loop's diameter changes from 100 cm to 60 cm in 0.5 s
a- What is the magnitude of the average induced emf?
b- What is the direction of the induced current?
c- If the coil resistance is 0.052, what is the average induced current?

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