State the principle of conservation of energy.

Does the principle of multiplication of thrust violate the principle of conservation of energy? Discuss.

Does a step up transformer violate the principle of conservation of energy ?

Sate Kirchhoff's laws in a network of conductors carrying current. 'State which law obeys the principle of conservation of energy.

Give the principle of conservation of energy .

State the principle of conservation of electric charge

Write about the principle of conservation of energy in interference and diffraction.