A 35 kΩ is connected in series with a resistance of 40 kΩ. What resistance R must be connected in pa

JAMB Physics 2023 177 views
Source: JAMB · 2023

A 35 kΩ is connected in series with a resistance of 40 kΩ. What resistance R must be connected in parallel with the combination so that the equivalent resistance is equal to 25 kΩ?

  1. 40 kΩ
  2. 37.5 kΩ ✓
  3. 45.5 kΩ
  4. 30 kΩ

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