00:01
Hello students, in this question, the first part that is the equivalent capacitance, right, we can write this to be equal to 20 multiplied by 30 by 20 plus 30 plus 13 microfarad, which turns out to be equal to 20 multiplied by 30 by 50 plus 30.
00:25
So this and this gets cancelled.
00:27
So this is 12 plus 30, that is 25 microfarad, that is the solution of first part.
00:38
The second part, that is the potential across the 20, right.
00:44
So now, since we know that q equals cv, right, so basically, we have the q constant, right, v is 12 volt, right, this is volt.
01:07
Now, since this is 12 volt, the capacitance, equivalent capacitance of the series 1 is 20 multiplied by 30 by 20 plus 30, that is 12 microfarad, right...