Checking the Current in a 12V Car Headlight

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    12v Car Current
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Homework Help Overview

The discussion revolves around verifying the current draw of a 12V car headlight, which is specified by the manufacturer to be 6A. Participants are examining a circuit diagram intended for measuring this current using an ammeter.

Discussion Character

  • Conceptual clarification, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are questioning the identification of the measuring device in the circuit diagram, with some noting the confusion between a voltmeter and an ammeter. Others are exploring the implications of circuit junctions on current and potential difference.

Discussion Status

The discussion is ongoing, with participants providing insights and raising questions about the correct identification of instruments and their roles in the circuit. There is a mix of responses, including some skepticism about the original poster's efforts and suggestions for further exploration.

Contextual Notes

There is mention of a specific resistance value for the ammeter and the potential use of a shunt resistor, indicating that assumptions about circuit components are being examined.

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I need help with this question... The manufacturer of a 12V car headlight specifies it will draw a current of 6A. You would like to check this claim with an ammeter designed to measure currents up to 10A and having a resistance of 0.1 Ohms. Which of the two figures below represents a circuit where the ammeter correctly measures the current in the headlight?
 

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The diagram shows an voltmeter, not an ammeter ... ?

Ignoring that (assuming the voltmeter is an ammeter) what are your thoughts on the question?
 
just read your textbook, or use Google..

if you can't answer this by yourself you haven't made any effort.
 
Uhm...Voltmeters and ammeters are different things. But taking that the voltmeter is an ammeter. How do junctions affect currents and pd's ?
 
Maybe he meant to put a 0.1 Ohm shunt across the Voltmeter. That turns it into an ammeter.
 

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