How is a moving coil meter converted into an ohmmeter?

Thank you for the helpful information and advice.In summary, the conversation discusses the conversion of a moving coil meter into an ohmmeter and the search for relevant derivations for a series type ohmmeter. The conversation ends with a member providing a website as a starting point and encouraging the original poster to ask specific questions for further assistance.
  • #1
Raikueza
1
0
Can someone tell me how a moving coil meter is converted into an ohmmeter?
I have been searching for relevant derivations for the series type ohmeter but came up with nothing useful. If you have an information source on the subject please share.
 
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  • #2
Raikueza, Welcome to Physics Forums!
Here is a website to get you started converting a moving coil meter into and ohmmeter. You may use Google to search for more detailed information.

http://www.engineersedge.com/instrumentation/electrical_meters_measurement/darsonval_movement.htm

After you've searched around and learned these basics, if you have any doubts or specific questions, then do come right back here and post them. Members here are always willing to assist a true searcher trying to increase her scientific understanding.

Bobbywhy
 

FAQ: How is a moving coil meter converted into an ohmmeter?

What is a moving coil instrument?

A moving coil instrument is a type of electrical measuring instrument that uses a coil of wire to measure current or voltage. The coil moves in response to the flow of electricity, and this movement is then measured and converted into a reading on a scale.

How does a moving coil instrument work?

A moving coil instrument works by using the principle of electromagnetic induction. When an electric current flows through the coil of wire, it creates a magnetic field. This magnetic field interacts with the magnetic field of a permanent magnet, causing the coil to move. The movement of the coil is then translated into a measurement on a scale.

What are the advantages of using a moving coil instrument?

One of the main advantages of using a moving coil instrument is its high accuracy. The movement of the coil is directly proportional to the current or voltage being measured, which results in precise readings. Additionally, moving coil instruments are also durable and have a longer lifespan compared to other types of measuring instruments.

What are the different types of moving coil instruments?

There are two main types of moving coil instruments: ammeters and voltmeters. Ammeters measure the flow of electric current, while voltmeters measure the potential difference between two points in an electrical circuit. There are also specialized moving coil instruments, such as galvanometers, which are used to measure small currents.

How do you calibrate a moving coil instrument?

To calibrate a moving coil instrument, you will need a known source of current or voltage. You can then adjust the instrument's scale so that the reading matches the known value. It is important to regularly calibrate moving coil instruments to ensure accurate readings.

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