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How can a Wheatstone bridge be used for the measurement of physical parameters?
Explanation: A Wheatstone bridge can be used for the measurement of physical parameters such as temperature, strain, light, etc by making use of an operational amplifier. One of the simplest applications of a Wheatstone bridge is the measurement of light by making use of a photo resistive device.
How do you analyze a Wheatstone bridge?
When balanced, the Wheatstone bridge can be analysed simply as two series strings in parallel. In our tutorial about Resistors in Series, we saw that each resistor within the series chain produces an IR drop, or voltage drop across itself as a consequence of the current flowing through it as defined by Ohms Law.
What is sensitivity of bridge?
The sensitivity of a Wheatstone bridge is defined as the deflection in the galvanometer per unit current. In the unbalanced condition of the bridge, when current flows, it causes the pointer of galvanometer to get deflected. Thus, the deflection rate is the function of sensitivity.
What are the advantages of Wheatstone bridge?
• The main advantage of the Wheatstone bridge is that it can be easily interfaced into various combinations . • The Wheatstone bridge is traditionally called ohmmeter as the results are measured in terms of resistance and also are accurate and precise.
How does the Kelvin bridge differ from the Wheatstone bridge?
Wheatstone bridge measures the resistance greater than or equal to 1 – ohm by balancing the circuit, whereas Kelvin double bridge is modified form of Wheatstone, which is used to measure lower resistance values in the range of 1 to 0.00001 ohms.
What is Wheatstone meter bridge?
A meter bridge is used in finding the unknown resistance of a conductor as that of in a Wheatstone bridge. What Is Wheatstone Bridge? A Wheatstone bridge is a kind of electrical circuit used in measuring an electrical resistance, which is unknown by balancing its two legs of the bridge circuit, where one of the legs includes an unknown component.
What does Wheatstone’s bridge mean?
A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. The primary benefit of the circuit is its ability to provide extremely accurate measurements (in contrast with something like a simple voltage divider ).