Answered: Consider the following current density…

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Electrical Engineering

Consider the following current density with and a = 1mm and b = 16mm; J= 4 a, mAlm? if a b .

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter1: Atomic Structure

Section: Chapter Questions

Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?

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Concept explainers

Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.

Question

Consider the following current density with and a =
1mm
and b = 16mm;
%3D
J= 4 a, mAlm? if a<p <b;
J = 0 elsewhere
a)
|Formulate and calculate the magnetic
field intensity, H1 , where o<p < a .
b)
Formulate and calculate the magnetic
field intensity,H2 , where a<p <b .
Formulate and calculate the magnetic
field intensity, H3 , where p > b .

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