Answer to Question #55728 in Electric Circuits for Ojimi
Solution: First of all we have to find an effective resistance.Reff=R3+R1*R2/(R1+R2)=5.2 ohm.
According to Ohm's law I=E/(r+R)=1.935 A.
According to 1-st Kirchhoff rule I1+I2=I, from where I1=I-I2.
In parallel connected resistors voltage drop is the same
U1=U2, and by using Ohm's law I1*R1=I2*R2.
Using I1=I-I2 we revrite (I-I2)*R1=I2*R2 and from this equation we determine I2=I*R1/(R1+R2)=0.774 A.
The answer is I2=0.774 A.
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