0 00:00:00,000 --> 00:00:09,000 In this example, you have a series circuit. Just add the figures and you will obtain the equivalent resistance. 1 00:00:09,000 --> 00:00:15,000 The equivalent circuit is another with this only resistance and the same voltage. 2 00:00:15,000 --> 00:00:18,000 This is a series parallel combination circuit. 3 00:00:18,000 --> 00:00:24,000 Firstly solve the parallel branches. Each of them has two resistors in series. 4 00:00:24,000 --> 00:00:27,000 Now solve the parallel branches. 5 00:00:27,000 --> 00:00:31,000 Copy the formula. Substitute the values of the resistors. 6 00:00:31,000 --> 00:00:35,000 Do the operations using the calculator. 7 00:00:35,000 --> 00:00:38,000 When you finish the result is 2 divided by 20. 8 00:00:38,000 --> 00:00:41,000 But this is the inverse of the result we are searching. 9 00:00:41,000 --> 00:00:44,000 You have to make the inverse of this result. 10 00:00:44,000 --> 00:00:47,000 That is finally 10 kilo ohms. 11 00:00:47,000 --> 00:00:49,000 This is the equivalent circuit.