When an additional resistor is connected across an existing parallel circuit, the total resistance____________?
Correct answer: D. decreases
- A. remains the same
- B. decreases by the value of the added resistor
- C. increases by the value of the added resistor
- D. decreases
Explanation
Adding a resistor in parallel provides an additional path for current, increasing total conductance. Since resistance is the reciprocal of conductance, the total resistance decreases.
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