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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

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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?
Transcribed Image Text: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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