Can Wheatstone bridge measure low resistance?
there is little or no current through it, or its resistance does not materially affect the results obtained. directly into measurements. Wheatstone bridge so as to add the connecting resistances X, BRIDGE ARRANGEMENT.
Which bridge is suitable for low resistance?
Kelvin Bridge
The Kelvin Bridge is a variation of the Wheatstone bridge which enables low resistances to be measured.
What is the range of resistance for Wheatstone bridge?
1 Ω to
Wheatstone is used for the measurement of a medium value range of resistance from 1 Ω to a few M Ω.
Why Wheatstone bridge is not suitable for low resistance?
Answer: Low Resistance: Wheatstone Bridgecan not be used to measure lowresistance because then the wireresistance and lead resistance come into the picture and affect the result. High Resistance: In wheatstone bridge, one balance the bridge by nullifying the deflection of the galvanometer.
Why meter bridge is not suitable?
The meter bridge is sensitive when the resistance of all four arms of the bridge are off the same order. If we measure too high resistance and the meter deflection is too small, ie, currents are too low. Similarly. For Too low and you get errors due to the resistance of the wire and the connections.
Which stone bridge is A?
: an electrical bridge consisting of two branches of a parallel circuit joined by a galvanometer and used for determining the value of an unknown resistance in one of the branches.
Why Wheatstone bridge is not used in laboratory in place of meter bridge?
Wheatstone bridge cannot be used forprecision measurement because error intorduced in contact resistance, thermoelectric emf and resistance of connecting leads.
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.”