What is the equivalent resistance of two 1000 Ω resistors in series?
Answer (2)
The equivalent resistance when two resistors are connected in series is the sum of their individual resistances.
The marking on the resistor that says "1000 W" is the rating that tells how much power the resistor can safely dissipate, without overheating or exploding. (The 'W' stands for 'Watts'.) It doesn't tell us anything about their individual resistances. So we don't have enough information to calculate their series equivalent.
The equivalent resistance of two 1000 Ω resistors connected in series is calculated by adding their resistances together. This results in an equivalent resistance of 2000 Ω. In formula form, R e q u i v = R 1 + R 2 , so R e q u i v = 1000 Ω + 1000 Ω = 2000 Ω .
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