A step up transformer converts a low input voltage into a high output voltage. Does it violate law of conservation of energy? Explain.

Describe briefly, with the help of a lablled diagram, working of a step-up transformer. A step up transformer converts a low voltage in to high voltage. Does it not violate the principle of conservation of energy?

Does a step up tranformer contradict the principle of conservation of energy?

The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy ? Why ?

Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side nd llow it to oscillate. Why does the bob eventually come to rest? What happens to its energy eventually? Is it a voiltion of the law of conservation of energy?

Does Lenz's law violate the principle of energy conservation?

A step -down transformer converts a voltageof 2,200 V into 220 V in the transmission line. Number of turns in primary coil is 5,000. Efficiency of transformer is 90% and its output power is 8 kW. Calculate input power.

A step -down transformer converts a voltageof 2,200 V into 220 V in the transmission line. Number of turns in primary coil is 5,000. Efficiency of transformer is 90% and its output power is 8 kW. Calculate number of turns in secodnary coil.