00:01
Hello students, in this question for the given circuit we have to find the equivalent resistance.
00:17
According to the circuit we can say r4 and r5 are in series.
00:26
So rs will be equal to r4 plus r5 is equal to 10 ohm plus 20 ohm is equal to 30 ohm.
00:41
Then we can say r2, r3 and rs are in parallel to one another.
00:49
So we can say 1 by rp will be equal to 1 by r2 plus 1 by r3 plus 1 by rs.
01:05
This would be equal to 1 by 30 plus 1 by 30 plus 1 by 30 is equal to 3 by 30 which is equal to 1 by 10 which is 1 by rp.
01:20
So rp will be equal to 10 ohms.
01:23
Then we can say r1, rp, r6 and r7 are in series with one another.
01:41
So we can say the total resistance of the circuit rt will be equal to r1 plus rp plus r6 plus r7.
01:51
Substituting the values we get 20 plus 10 plus 15 plus 25.
02:02
So the equivalent resistance of the circuit rt will be equal to 70 ohms...