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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).
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How scientists estimate the mass and size of the Earth?
The size of Earth can be accurately estimated by satellite measuring devices and simple geometry. The density of Earth can be derived by the effect of its gravitation on other nearby planetary bodies.
What is metric measurment?
metric measurement is the system based on multiplies of 10. ie. there are 10 millimetres in a centimetre, 100 centimetres in a meter, 1000 metres in a kilometre. Similarly for other measurements such as the Litre, or the kilogram.
Why is square meter called derived unit?
Because it is derived - or based on - other units. In this case, the meter. 1 square meter = 1 meter x 1 meter.
A picture of a meter stick?
Draw a long narrow rectangle. Along its length make marks at 1/100 of the length, 2/100, 3/100 (labelling them) up to the last which is at the other end. This is a picture of a metre stick.A:Or, just click the related link below.
Is a centimeter similar to a meter?
Only in that a centimeter is one-one hundredth of a meter. In other words it takes 100 centimeters to make a meter.
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.
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.
State 5 type of temperature measuring devices other than thermocouple with its application?
RTD - Resistence temperature detector Thermistor Pyrometer Thermometer
What other measuring tools can you use besides a ruler?
A meter stick, a yard stick, a protractor, a compass if you can think of any more please add to this answer
How do you get the square meter area of land?
The land you are measuring is probably a rectangle, find the length of 2 sides (that are not directly across from each other) and then multiply them.
Is 1 cubic meter measured 1 meter h x 1 meter w x 1 meter d?
That is the simplest form of a cubic meter, a cube measuring one meter on all edges. However, you could also have many other shapes which have a volume of one cubic meter. For example if the height were only half a meter but the length were increased to two meters, you still have a cubic meter of volume. There are infinite variations.
