Resistor Combinations

Find the effective resistances in these circuits

    A. Series combination

  1. 50R and 100R in series
  2. 4K and 500R in series
  3. 47K and 47K in series
  4. 5K2 and 2K1 in series


    5. B. Parallel combination

  5. 40R, 40R and 700R in parallel
  6. 90R, 50R and 100R in parallel
  7. 300K, 300K and 300K in parallel
  8. 300K, 600K and 700R in parallel


    9. C. Mixed combination

  9. 100R, 100R in parallel, plus 90R in series
  10. 80K, 60K in parallel, plus 400R in series
  11. 250R, 100R in parallel, plus 10R in series
  12. 2K5, 3K4 in parallel, plus 10K6 in series