Chapter 37, Problem 46A

Can an efficient transformer step up energy? Defend your answer.

To determine

To Explain: Whether an efficient transformer can step-up energy.

Explanation of Solution

Introduction: 

According to the law of conservation of energy, a form of energy can be changed into another form of energy and there is no net loss.

Explanation: 

The efficient transformer never step-up energy because it wouldbe violating the law of conservation of energy. 

Any machine/device does not give $100\%$ efficiency.There is always some loss even if the system/machine is perfectly insulated to avoid leakage/loss of energy from the system.

As per the statement, an efficient transformer is an ideal one and sucha type of transformer does not exist. 

Conclusion: 

It's violating the law of conservation of energy so, a transformer can never step-up the energy.