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For an analog ohmmeter, with a needle that moves left and right: The needle is spring loaded; when current is running through the meter, the current causes a small magnetic field in the windings of the meter mechanism, causing it do deflect to the right.
If you're measuring current or voltage, if no current is running through the meter, then no deflection, so it should read zero on the left hand side of the scale. When measuring ohms (resistance) on an unenergized circuit, the battery in the meter provides the current. When you short the 2 leads together you have zero resistance to current (0 ohms). When you have an open circuit, no current flows, so there is an infinite resistance. So infinity is on the left side of the scale when no deflection, and zero is on the right side with maximum deflection (maximum current).
The ohm meter scale is reverse of other measuring devices because it is logarithmic. This is due to the large range of values ohms can take, and a logarithmic scale allows for easier readability across this wide range. The scale is designed this way to accommodate precision in measuring resistance values efficiently.
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What are the devices used in measuring potential hazard?
Devices used in measuring potential hazards include gas detectors for detecting toxic gases, radiation detectors for measuring radiation levels, and pH meters for assessing chemical hazards. Other devices include dosimeters for measuring exposure to radiation, infrared cameras for detecting hot spots, and noise dosimeters for measuring noise levels.
What do use to measure length or the distance between two points?
A ruler, measuring tape, or a meter stick can be used to measure length or distance between two points. Alternatively, digital devices like laser measuring tools or GPS systems can also be used for more accurate measurements over longer distances.
What instrument measures water velocity?
A device called a current meter is commonly used to measure water velocity. Current meters can be mechanical or electronic, and they work by directly measuring the speed at which water flows past a specific point in a river, stream, or other water body.
How do you make a force meter measuring in newtons with a elastic band?
To create a force meter measuring in newtons with an elastic band, you can attach the elastic band to a stationary object and hang a known weight from the other end. Measure the elongation of the band and use Hooke's Law (F = kx) to calculate the force in newtons, where F is the force, k is the spring constant of the elastic band, and x is the elongation.
Is a psychrometer used in measuring wind?
No, a psychrometer is utilized to measure the relative humidity in the air by comparing the readings between a dry-bulb thermometer and a wet-bulb thermometer. Wind speed is typically measured using anemometers or other wind-measuring devices.
What are the other measuring devices and its uses?
the different measuring devices are tape measure,meter stick,ruler,protractor, thermometer,bimeter thermometer,water meter,and etc.............knowing more an google.com
What is the difference between a ruler and a meter stick?
a ruler is shoter than a meter stick ~ A typical ruler is 12 inches, however, there are many other measuring devices also called rulers. A meter stick is around 3 yards, I believe.
What are the other measuring angle devices are there besides the protractor?
nothing else
What is for measuring length or distance in science?
For measuring length/distance, meter is used. Other units are km / cm/ mm.
What are the devices used in measuring potential hazard?
Devices used in measuring potential hazards include gas detectors for detecting toxic gases, radiation detectors for measuring radiation levels, and pH meters for assessing chemical hazards. Other devices include dosimeters for measuring exposure to radiation, infrared cameras for detecting hot spots, and noise dosimeters for measuring noise levels.
Are there any other methods for measuring resistance?
An Ohm Meter.
Who the major contributors were to the development of the devices and units used to measuring?
the Egyptians and other early developing societies
How do you use the meter stick?
place on end of what you're measuring at 0, and note where the other end is. example, when measuring a pencil, place one end at 0, and the other end should be at around 10cm
What are meter tape used for?
meter tape are used for measuring the area of the field which is mostly used by forestry, carpenters and other things which is long that you want to know the exact area of it.
How is compound meter different from a simple meter?
Compound meter has beats that are divided into groups of three, creating a more complex rhythmic feel. Simple meter, on the other hand, has beats that are divided into groups of two, resulting in a simpler and more straightforward rhythmic pattern.
What do use to measure length or the distance between two points?
A ruler, measuring tape, or a meter stick can be used to measure length or distance between two points. Alternatively, digital devices like laser measuring tools or GPS systems can also be used for more accurate measurements over longer distances.
State 5 type of temperature measuring devices other than thermocouple with its application?
RTD - Resistence temperature detector Thermistor Pyrometer Thermometer
