1. Device which is not based on the principle of Wheatstone bridge:
(1) Potentiometer, (11) Meter bridge, (111) Post-office box, (W) Carty foster bridge.
2. Which of the following is ohomic resistance :
(i) P-N junction, (11) LED, (ii) Transistor, (iv) Copper wire.
3. The conductivity of super conductor is :
(1) Infinity, (11) Very large, (ii) Very less, (iv) Zero.
4. Which liquid is good conductor but it is not a electrolyte :
Tl(i) Salted water, (ii) Dilute Acid, (i) Mercury, (iv) Copper sulphate.
Answers
Answer:
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).[1] Its operation is similar to the original potentiometer.
The Wheatstone bridge was invented by Samuel Hunter Christie (sometimes spelled "Christy") in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. One of the Wheatstone bridge's initial uses was for the purpose of soils analysis and comparison.[2].
ANSWER
1. Device which is not based on the principle of Wheatstone bridge:(iv)Carty foster bridge.
2. Which of the following is ohomic resistance :
(iv)copper wire
3.The conductivity of super conductor is :
(i) Infinity,
4.Which liquid is good conductor but it is not a electrolyte :
(iii) Mercury,