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If a 15Ω resistor is connected in parallel with a 30Ω resistor, what is the equivalent resistance? (2021)

Practice Questions

If a 15Ω resistor is connected in parallel with a 30Ω resistor, what is the equivalent resistance? (2021)
  1. 10Ω
  2. 7.5Ω
  3. 5Ω
  4. 12Ω
For resistors in parallel, 1/R_eq = 1/R1 + 1/R2 = 1/15 + 1/30 = 2/30 + 1/30 = 3/30. Therefore, R_eq = 30/3 = 10Ω.
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