ROOP

why xray is used in compton effect rather than uv ray?

why there was a need of this wein displacement law? i mean to say why this law evolved?

why current decreases while charging a capacitor?

why do we use kelvin scale while doing numericals on carnot's engine?

yeah so can we make a rectifier without a transformer? suppose i have an ac source of 5v and want to make it to dc. so without the transfor i can right

yeah sure actually as far my knowledge goes transformer is used for stepping down the voltage so that the diode doesnt breaks means the minimum voltage is 6v which can go through it. suppose we connect it to mains then the potential is very high like 220v so by the help of the transformer we can step down it...........so is this is the only use?

can anyone explain the basic use of a transformer in a rectifier

what is the basic use of the transformer in a rectifier? please explain