00:02
Hello students, so in this question here we see the first part that is when switch is open then voltage across terminal is 20 volt.
00:31
Now the second part when switch is closed the current i is equal to the current i is equal to 20 divided by 15 which is 4 divided by 3 amp and delta v is equal to 20 plus i multiplied by art so delta v is equal to 20 plus 4 multiplied by 1 divided by 3 which is delta v is equal to 20 plus 1 .3 or delta v is equal to 21 .33 wood.
01:27
Now we move to the next part of the question in which we have to find the resistance, the overall resistance of the circuit and the circuit is given like this.
01:44
Here is a resistance, here a resistance and a final.
01:49
Now we nail their potential.
01:51
A, b, c, this will be b because this is the same wire and here will be the c and here will be the d.
02:06
So firstly rbc is equal to 1 divided by 4 plus 1 divided by 6 as this is 2 o 4 o 6 o 6 o and 6 o.
02:22
So this will be 6 plus 4 divided by 6 multiplied by 4 which is equal to 10 divided by 24...