#4) In the figure below, the voltage dropped across resistor R1 = 1.20 is V? = 15.0V. The current in R2 is I2 = 4.00 A. The emf source is 50V. The resistance R3 =2.00 ?. What is the resistance of R4? (Hint: Use both Kirchhoff laws)
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We are given that the current in resistor R is I = 4.00 A. According to Kirchhoff's laws, the current entering a junction is equal to the current leaving the junction. Therefore, the current in resistor #4 is also 4.00 A. Show more…
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