Answer to Question #202870 in Physics for Heaven Cruz

Question #202870

A 7.0 Ohms resistor is connected in the series with another resistor and a 4.5 V battery. The current is 0.60 A. calculate the value of the unknown resistance.

Expert's answer

"V=I(r+r_x)\\to4.5=0.6\\cdot7+0.6\\cdot r_x\\to r_x=0.5\\ (\\Omega)" . Answer

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