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?

Answer 1

I = 7.0 mA
V = 14.7 Volts.
v1 = 3.5 Volts.
V2 = 1.4 Volts.

a. V3 = V-V1-V2

b. R3 = V3/I
I = 0.007 Amps