Use the worked example above to help you solve this problem. Find the currents i

Question

Use the worked example above to help you solve this problem.

Find the currents in the circuit as shown in the figure below by using Kirchhoff's rules. R = 4.3 ?.

I3 = .28 Correct: Your answer is correct. A

I2 = .58 Correct: Your answer is correct. A

I1 = .86 Correct: Your answer is correct. A

Use the values from PRACTICE IT to help you work this exercise. Suppose the 6.0-V battery is replaced by a battery of unknown emf, and an ammeter measures I1 = 1.7 A. Find the other two currents and the emf of the battery.

I2 = A

I3 = A

emf = V

Explanation / Answer

I1 = 1.7 A by current division I2 = (9/(9+ 4.3) )* I1 = 1.15A I3 = I1-I2 = 0.55 A emf = 4 *I1 + 9* I3 = 11.75V

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