00:01
In this problem, we have been given that there is a transformer and the number of turns across this primary section that is 400.
00:12
And the number of turns in the secondary end, that is 200.
00:19
And here we are also given that the primary coil is connected to the source.
00:27
That's ac source, which supplies voltage of 240 volts.
00:33
So voltage across primary end, that's 240 volt, and we are required to compute the voltage across the secondary end, that vs, is needed to be computed.
00:44
So for an ideal transformer, we have this relation.
00:48
So let's use this relation.
00:50
So we use the first part where this vp, that's equal to ns by np, and that implies vs over 240, that's equal to 200 over 400.
01:03
And simplifying this, we get vas as 120 volt.
01:08
So that's the voltage across the secondary end...