Solving Electrical Circuit Puzzle: Voltmeter & Transistor

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Homework Help Overview

The discussion revolves around an electrical circuit problem involving a voltmeter and a transistor. Participants are exploring the implications of a voltmeter reading 6V and the behavior of a light in the circuit, as well as the role of a transistor in this context.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning why the light is not receiving the expected voltage despite the voltmeter reading 6V. There are discussions about the properties of amplifiers and the suitability of different transistor configurations for the problem at hand.

Discussion Status

The discussion is active, with participants raising questions about the nature of the circuit and the function of transistors. Some guidance has been offered regarding the need to understand basic properties of amplifiers and transistor configurations, but no consensus has been reached on the specific approach to take.

Contextual Notes

Participants express varying levels of familiarity with the concepts, with one noting a lack of exposure to different types of amplifiers and transistor configurations in their studies. This may influence the depth of discussion and understanding.

rebecca12345
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Homework Statement


http://web.stagram.com/p/362176186041336029_243276631
this is a link to the question. I'm stuck on 2a and b


Homework Equations


I don't understand if the voltmeter is reading 6v why the light is not receiving 6v? And why would a transistor help this problem?


The Attempt at a Solution

 
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a) What properties (there are two candidates here) of a real amplifier cause the output to diminish when loaded?
b) Of the three basic transistor configurations, to wit, common emitter, emitter follower and common-base, which one do you think is appropriate here, and why?
 
a) if it is an inverting amplifier and operational amplifier?
b) I have never heard of any of them, I'm 16 and doing higher physics in Scotland, we've only ever spoke about transistors and not any types or anything like that
 
a) has nothing to do with inverting vs. noninverting. Is characteristic of any type of amplifier - op amp, stereo amp, etc.
b) Not transistor types - transistor circuit configurations. You need to look up and study the basic properties of those three configurations and think about which would be suitable in your case.
 
rebecca12345 said:
1. I don't understand if the voltmeter is reading 6v why the light is not receiving 6v? And why would a transistor help this problem?



When the switch is thrown the voltmeter no longer reads 6V.
Transistors can amplify current and/or voltage depending on circuit configuration.
 
Last edited:

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