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# The circuit below shows three identical resistors labeled 1,2 and 3.The reading on the ammeter is 12.0A. How much current flows in each resistor?4.0A36.0A12.0AWe cannot determine the current values without knowing the resistor valuesWe cannot determine the current values without knowing the battery voltage

A
12.0A
B
We cannot determine the current values without knowing the resistor values
C
4.0A
D
36.0A
E
We cannot determine the current values without knowing the battery voltage
Solution
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#### Let R1=R2=R3=R (as resistors are identical) ,therefore equivalent resistance , 1R′=1R+1R+1R , or R′=R/3 ,given total current in the circuit I=12.0A ,therefore voltage V=IR′=12.0×(R/3)=4.0R ,as the resistors are in parallel combination so voltage across them will be same that is V=IR , now current through R1 , I1=V/R=4.0R/R=4.0A ,since the resistors are equal therefore this will also be the current through R2 and R3 .

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