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Suppose you had a circuit with three resistors in series and you measured I=7.0 milliamps; V = 14.7 volts; V1= 3.5 volts and V2 = 1.4 volts. What would be the voltage across the third resistor? What would its resistance be?

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V =V1+v2+v3
14.7 =3.5+1.4+v3
v3 =9.8 ans
v3 =IR3
9.8/7*10^-3 =R3 =1400 ohm

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