Posted by Nilan on Wednesday, May 18, 2011 at 10:20pm.
The two parallel resistors behave like a single serives resistor of equivalent resistance Req
1/Req = 1/30 + 1/60 = 1/20
So Req = 20 ohms
The total circuit current is
V/R = 180/(20 + 10) = 6 Amps
The voltage drop is 60 V across the 10 ohm resistor and 120 V across the pair of parallel resistors. You seem to be asking the same question twice.
All of the circuit current (6A) goes through the 10 ohm resistor
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