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What is the function of a Carey foster bridge?
A Carey-foster's bridge is a modified version of the meter bridge (wheatstone bridge or potentiometer). It can be used to find out the average resistance per unit length of the meter bridge wire and hence find out the unknown resistance. It is more accurate and more sensitive than a meter bridge.
What is the difference between an auto-meter and a tachometer?
A tachometer and an auto-meter is an instrument measuring the rotation speed of a car or a motor. An auto-meter is more accurate and reliable than a tachometer.
Why do you use a meter bridge for measurements rather than a voltmeter and ammeter?
A meter bridge is used in some cases for precise resistance measurements. It can be more accurate than using a voltmeter and ammeter because it eliminates errors from contact resistance and internal resistance of the instruments. This method allows for more accurate determination of resistance by comparing two resistance values directly.
Why couldn't a meter stick be used to measure expansion of the rod?
A meter stick is not precise enough for measuring small changes in length due to thermal expansion. For accurate measurements of expansion, a more sensitive instrument like a micrometer or vernier caliper is required.
Which meter is used to get the accurate reading between analog multimeter and digital multimeter?
A good quality analogue instrument is probably as accurate as a digital instrument, but the digital instrument is more robust, has no movement so is not affected by gravity, and is easier to read.
What is the difference between the Carey foster bridge and meter bridge?
There is no great difference between between the two in principlebut,In a Carey foster's bridge there is no end resistance whereas in the case of a metre bridge end resistance afffects our readings.Hence Carey foster bridge is more accurate than metre bridge .Carey foster bridge can also measure low resistance and high resistance but a metre bridge cannot do so.
Which is more accurate vernier caliper or a meter stick measurements?
A vernier caliper.
Is the meter more accurate than the foot?
No, they are simply a different unit of measure.
Which instrument is more accurate at 500 HZ and 5000 HZ?
A frequency analyzer would be more accurate at analyzing frequencies like 500 Hz and 5000 Hz compared to a standard microphone or sound level meter. Frequency analyzers are designed to specifically measure and analyze different frequencies accurately.
How would you know that the instrument is more accurate than the other by just looking at their least count?
the one that had smaller least count wil be more accurate
Why is the meter length in terms of wave length of light considered more accurate?
Measuring the meter in terms of the wavelength of light is considered more accurate because the wavelength of light is a fundamental constant of nature that is well-defined and stable. This provides a consistent and precise reference for defining the meter, allowing for highly accurate measurements compared to physical artifacts or other references.
Why couldn't a meter stick be used to measure the expansion of the rod?
Probably because the meter stick is not accurate enough to measure the small amount of expansion of the rod. You need something smaller and more accurate.
