Three resistors connected in series each carry currents labeled I1, I2 and I3 . Which of the following expresses the value of the total current IT in the system made up of the three resistors in series?
a. IT = I1 + I2 + I3
b. IT = (1/I1 + 1/I2 + 1/I3)
c. IT = I1 = I2 = I3
d. IT = (1/I1 + 1/I2 + 1/I3)?1
c
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