Name a practical device which uses the principle of Wheatstone bridge.

Draw circuit diagram of Wheatstone bridge.

Name two instruemnts which work on the principle of floatation?

Name two solar devices.

Name the principle which restricts the pairing of electrons in degenerate orbitals.

Name the principle which restricts the pairing of electrons in degenerate orbitals.

The correctness of equations can be checked using the principle of homogeneity. State the principle of homogeneity.