In the circuit of the figure below, determine the current in each resistor and t

Question

In the circuit of the figure below, determine the current in each resistor and the potential difference across theR=217.6-?resistor.

Resistor (?) Current (A) R
Your response differs from the correct answer by more than 10%. Double check your calculations. 80.0
Your response differs from the correct answer by more than 10%. Double check your calculations. 20.0
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. 70.0

Explanation / Answer

Let current through 80 ohms be I1 Let current through 20 ohms be I2 Let current through 70 ohms be I3 then current through R = I1 +I2 +I3 writing KVL 217.6 (I1 +I2 +I3) + 80 I1 =40 217.6 (I1 +I2 +I3) +20 I2 = -360 217.6 (I1 +I2 +I3) + 70 I3 =80 solving these equations I1= 3.01A I2= -7.95A I3= 4.01A current through R = -0.93A power = 0.93 ^2 * 217.6 =188.2W

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