![In the Figures (a) and (b) shown below, the transformers are identical and ideal, except that the transformer in Figure (b) is centre-tapped. Assuming ideal diodes](https://www.gkseries.com/blog/wp-content/uploads/2023/08/In-the-Figures-a-and-b-shown-below-the-transformers-are-identical-and-ideal-except-that-the-transformer-in-Figure-b-is-centre-tapped.-Assuming-ideal-diodes.jpg)
Q. In the Figures (a) and (b) shown below, the transformers are identical and ideal, except that the transformer in Figure (b) is centre-tapped. Assuming ideal diodes, the ratio of the root- mean-square (RMS) voltage across the resistor ๐ in Figure (a) to that in Figure (b) is
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/image-23.png)
(A) โ2:1
(B) 2:1
(C) 2โ2:1
(D) 4:1
Ans: 2:1
Sol:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-604.png)