Question

Principle of Wheatstone's bridge is used in as : a) galvanometer b) potentiometer c) ammeter d) voltameter​

Answer 1

Answer:

4x -2y =6

7x -5y=3

please solve this by substitution method.

Answer 2

The principle of Wheatstone's bridge is used in b) potentiometer.

Wheatstone's bridge:

• A Wheatstone Bridge is an electric circuit which is used to measure and calculate the electrical resistance of a circuit.
• The usual arrangement of the Wheat stone bridge circuit consists of four arms.
• According to this principle, the resistance of length AB/resistance of length BC = R / X.

Potentiometer works on the Wheatstone bridge principle:

• A potentiometer is an electric device which is used to control EMF and also internal resistance of a cell.
• A meter bridge is observed to be a simple form of potentiometer.
• It is based on the Wheatstone bridge.
• It is used to calculate the unknown resistance.
• Hence, the correct answer among all the options is option b) potentiometer.

(#SPJ2)