Q4(a) Define the following terms associated with a magnetic circuit: (i) Magnetomotive force; (ii) Magnetic flux. (b) Explain the differences between a forward biased and a reverse biased pn junction diode. (c) A coil of 300 turns is wound uniformly on an iron ring with a mean circumference of 0.4 m and a cross sectional area of 5x104 m?. The current flowing through the coil is 1.2 A and the magnetic flux is considered as 9.2x104 Wb. Calculate the following: (i) Magnetic flux density; (ii) Magnetizing force; (ii) Permeability of the medium.

Q4(a) Define the following terms associated with a magnetic circuit: (i) Magnetomotive force; (ii) Magnetic flux. (b) Explain the differences between a forward biased and a reverse biased pn junction diode. (c) A coil of 300 turns is wound uniformly on an iron ring with a mean circumference of 0.4 m and a cross sectional area of 5x104 m?. The current flowing through the coil is 1.2 A and the magnetic flux is considered as 9.2x104 Wb. Calculate the following: (i) Magnetic flux density; (ii) Magnetizing force; (ii) Permeability of the medium.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 9PE: (a) An MRI technician moves his hand from a region of very low magnetic field strength into an MRI...

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