The meter bridge uses the same principle as the Wheatstone Bridge. It is used to find the unknown Resistance of the Material. The meter bridge consists of a wire of 100 cm, a scale, one unknown Resistor, one known Resistor or a Resistance Box, a Galvanometer and a jockey..
Hereof, what is the purpose of a meter bridge?
A meter bridge also called a slide wire bridge is an instrument that works on the principle of a Wheatstone bridge. A meter bridge is used in finding the unknown resistance of a conductor as that of in a Wheatstone bridge.
which material is used for the meter bridge wire and why? The material of wire used in meter bridge is made of manganin or eureka due to there high specific resistance or resistivity. Thick copper strips are used in meter bridge because copper is a good conductor of electricity.
Also know, how does a meter bridge work?
The meter bridge principle is based on the Wheatstone Bridge circuit which says that if at any point or length (of a wire), the ratio of two resistances (say R1 and R2) is equal to the ratio of another two resistances (say R3 and R4 where R4 is the unknown resistance), then there shall be no flow of current at that
What is meant by meter bridge?
Meter bridge is a wheatstone bridge in which one lateral pair of resistances is replaced by a straight wire of length 1m of uniform cross section. And other pair consist of one known and one unknown resistance.
Related Question Answers
What is null point in meter bridge?
The metre bridge, also known as the slide wire bridge consists of a one metre long wire of uniform cross sectional area, fixed on a wooden block. As the jockey slides over the wire AC, it shows zero deflection at the balancing point (null point). If the length AB is , then the length BC is ( 100-l ).Why manganin wire is used in meter bridge?
Manganin foil and wire is used in the manufacture of resistors, particularly ammeter shunts, because of its virtually zero temperature coefficient of resistance value and long term stability. It is because, an alloy has high resistivity and a low value of temperature coefficient of resistance.How can we increase sensitivity of meter bridge?
The sensitivity of the meter bridge is at the peak when all resistors have the same order. It can be increased by making sure that the current in the galvanometer is very high. This can in turn be done by lessening the values of the resistors that are used in the instrument.What do you mean by resistance?
Resistance is the opposition that a substance offers to the flow of electric current. When an electric current of one ampere passes through a component across which a potential difference (voltage) of one volt exists, then the resistance of that component is one ohm.Who discovered meter bridge?
The Concept of Wheatstone Bridge Out of the two, one of the legs is an unknown component which was invented by Samuel Hunter Christie in the year 1833 and later, it improved and popularized by Sir Charles Wheatstone in the year 1843.What is the formula of Metre bridge?
The length AD= l1 and DC = (100-l1). Resistance of AD=Rcml1, where Rcm is the resistance of the wire per unit centimetre. Resistance of DC=Rcm (100-l1). The four arms AB, BC, DA and CD [with resistances R, S, Rcm l1 and Rcm (100-l1)] form a Wheatstone bridge with AC as the battery arm and BD the galvanometer arm.What is the job of a voltmeter?
A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit.What is potential meter?
The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment.What is balancing length in meter bridge?
In a metre bridge, the balancing length from the left end (standard resistance of one ohm is in the right gap) is found to be 20 c m 20 cm 20 cm. The value of the unknown resistance is. A .What is the principle of Metre bridge and potentiometer?
A metre bridge is a simple type of potentiometer which may be used in school science laboratories to demonstrate the principle of resistance measurement by potentiometric means. A resistance wire is laid along the length of a metre rule and contact with the wire is made through a galvanometer by a slider.What is meter bridge and why is it called so?
Explanation: The reason why this bridge is called as Meter Bridge is because of the fact that it works on the Wheatstone bridge's principle. So, people also popularly call it as Wheatstone's meter bridge. Another thing is that the wire length used in this circuit is of 1 meter, so it has got its name as a meter bridge.What are the limitations of Wheatstone bridge?
Limitation of Wheatstone bridge: “It is not susceptible to high dc current.” “It may give inaccurate readings if not balanced.” “The Wheatstone bridge measures resistance from few “ohms” to “megohms.”What is the working principle of Metre bridge?
What is the principle of a meter bridge? A Meter Bridge is also called as slide wire bridge and is an instrument that works on the principle of a Wheatstone bridge. A meter bridge is used to find the unknown resistance of a conductor as that of in a Wheatstone bridge.Can we use copper wire instead of Nichrome in meter bridge?
Copper being a good conductor of electricity, it will not offer any resistance to the flow of electricity. On the other hand, when a nichrome coil is used, its resistance being very high compared to copper, the current passed gets converted into the heat.What is Metre bridge principle?
The metre bridge, also known as the slide wire bridge consists of a one metre long wire of uniform cross sectional area, fixed on a wooden block. As the jockey slides over the wire AC, it shows zero deflection at the balancing point (null point). If the length AB is , then the length BC is ( 100-l ).Which wire is used in potentiometer?
Constantan and Manganin are generally used in potentiometer wires.. Constantan is a copper-nickel alloy usually consisting of 55% copper and 45% nickel. Its main feature is its resistivity which is constant over a wide range of temperatures.What is the use of jockey in meter bridge?
Metre Bridge apparatus The terminal B between the gaps is used to connect galvanometer and jockey.What are end errors in meter bridge?
The shifting of zero of the scale at different points as well as the stray resistance give rise to the end error in meter bridge wire. This error arise due to the non uniformity of the meter wire End corrections can be estimated by including known resistances P1 and Q1 in the two ends and finding the null point.What is Eureka wire?
Constantan is a copper–nickel alloy also known as Eureka, Advance, and Ferry. It usually consists of 55% copper and 45% nickel. Its main feature is the low thermal variation of its resistivity, which is constant over a wide range of temperatures. 
