Find the net resistance and calculate current flowing into the circuit

1.	Find the net resistance and calculate current flowing into the circuit
Answer» Explanation:....10 ohm and 15 ohm are in series and also 20 ohm and 5 ohm are in series........let 10 ohm be R1 , 15 ohm be R2 , 20 ohm be R3 and 5 ohm be R4........therefore,......T1= R1 + R2 = 10 ohm + 15 ohm = 25 ohm....T2 = R3 + R4 = 20 ohm + 5 ohm = 25 ohmow,......T1 and T2 are in parallel........1/T1 + 1/T2 = 1/25 + 1/25 =2/25 = 12.5..... ohm.......therefore,.......current (I) = V/R = 45V/12.5 ohm........= 18/5.........= 3.6 A

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