Three identical resistors, each with a resistance R1, are wired in series in an electrical circuit.  These three resistors are then replaced by one equivalent resistor, whose resistance is R.  If the properties of this one resistor (R) are compared with one of the original three resistors (R1), which of the following is true?               a) The current through R equals the current through R1.  b) The voltage drop across R equals the voltage drop across R1. c) The power dissipated by R equals the power dissipated by R1. d) R is less than R1.

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