Title: Understanding the Magnetic Field in a LoudspeakerThe image illustrates a cross-section of a conventional loudspeaker. In this setup, a voice coil—driven by an audio signal and attached to a lightweight cone—is suspended in a gap within an iron yoke. This yoke is designed as a cylindrical cup featuring a central pedestal.**Key Components:**1. **Voice Coil:** Connected to the audio signal and cone.2. **Iron Yoke:** Cylindrical in shape, providing structural support.3. **Permanent Magnet:** Situated at the center, it's cylindrical with a length of 25mm and a diameter of 20mm. It creates a magnetic field with an intensity of \( H = 4 \times 10^4 \) A/m throughout its length.**Objective:**- Estimate the magnetic \( B \)-field present in the 2.5mm gap near the voice coil.**Assumptions:**- The reluctance of the yoke is negligible.- The magneto-motive force of the permanent magnet is the product of \( H \) times its length.**Diagrams:**1. **2D Diagram (Side View):** - Shows the configuration with the yoke and the permanent magnet. The labeled measurements are: - Gap: 2.5mm near the voice coil. - Magnet Length: 25mm. - Yoke Diameter: Total 10mm.2. **Top View Diagram:** - Provides a circular view of the loudspeaker components, helping to visualize the placement of the voice coil and magnet.This cross-sectional analysis aids in understanding the distribution and function of the magnetic fields in a loudspeaker, crucial for converting electrical signals into sound efficiently.

Given Data The magnetic field intensity is:H=4×104 A/m The length of the permanent magnet is:lm=25…

The figure shows a cross section of a conventional loudspeaker. A voice coil (driven by the audio signal and connected to a lightweight cone) is suspended in a gap in an iron yoke, which has the form of a cylindrical cup with a center pedestal. The center pedestal is a permanent cylindrical magnet (length of 25mm and diameter of 20mm), which generates a magnetic field intensity of H=4x104 [A/m] throughout its length. Estimate the B-field in the 2.5mm gap near the voice coil. Assume that the reluctance of the yoke is negligible. Note that the magneto-motive force of a permanent magnetic is the product of H times its length. 10 mm 2.5 mm 25 mm voice coil ㅓㅏㅏ Iron "yoke" booood N S pooooo permanent magnet top view

The figure shows a cross section of a conventional loudspeaker. A voice coil (driven by the audio signal and connected to a lightweight cone) is suspended in a gap in an iron yoke, which has the form of a cylindrical cup with a center pedestal. The center pedestal is a permanent cylindrical magnet (length of 25mm and diameter of 20mm), which generates a magnetic field intensity of H=4x104 [A/m] throughout its length. Estimate the B-field in the 2.5mm gap near the voice coil. Assume that the reluctance of the yoke is negligible. Note that the magneto-motive force of a permanent magnetic is the product of H times its length. 10 mm 2.5 mm 25 mm voice coil ㅓㅏㅏ Iron "yoke" booood N S pooooo permanent magnet top view

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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