Hello, this question is for my intro to electronics physics class. We are learni

Question

Hello, this question is for my intro to electronics physics class. We are learning the basics of circuits so assume that I don't already know any background information. I need to complete this table of values for the circuit. Usually, I would start by finding Req, but I don't know how to do that with this one.

Please give a full explaination on what to do and why, possibly with arrows connecting things or brief discriptions of how each step is reached.

Thank you so much in advance!

Explanation / Answer

here,

R1 ans R2 are in parallel, their equivalent resistance , R4= R1 * R2 /(R1 + R2)

R4 = 220 * 130/(220 + 130) ohm

R4 = 81.7 ohm

the total resistance of the circuit , Req = R3 + R4 = 551.7 ohm

Itot = I3 = Vtot /Req = 0.022 A

the potential difference across R3 , V3 = I3 * R3 = 9.8 V

the potential drop across R1 and R2 , V1 = V2 = Vtot - V3 = 2.21 V

the current through R1 , I1 = V1/R1= 0.01 A

the current through R2 , I2 = V2/R2 = 0.017 A

the power dissapated through R1 , P1 = I1 * V1 = 0.0221 W

the power dissapated through R2 , P2 = I2 * V2 = 0.038 W

the power dissapated through R3 , P3 = I3*V3 = 0.022 W

the power dissapated through battery , Ptot = Itot * Vtot = 0.264 W

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