Question

An ideal transfomer has a turns ratio of 10. When the primary is connected to 220V,50Hz ac source, the power output is

• A. \(\frac{1^{th}}{10}\) the power input
• B. Equal to power input
• C. Zero
• D. 10 times the power input

Answer 1

The Correct Option is B

Step 1: Properties of an Ideal Transformer 
An ideal transformer is a device with no energy losses. It operates on the principle of mutual induction and conserves energy.

Step 2: Power in an Ideal Transformer
In an ideal transformer, the input power (\(P_{in}\)) is equal to the output power (\(P_{out}\)). Mathematically, this is represented as:

\[ P_{in} = P_{out} \]

Step 3: Conclusion
Given an ideal transformer, the power output will always equal the power input, regardless of the turns ratio or input voltage.

Final Conclusion:
For an ideal transformer, output power equals input power.