438. assignment (circuits)

Consider the two simple circuits shown. Fill-in the blanks below each, doing any needed calculation.

1. ___ resistors in series? Or parallel? ____

2.___ total (equivalent) resistance?    ____

3. ___ total current?                            ___

4. ___ total power dissipated?            ____

5. ___ 30 Ohms resistor current?  _______

6. ___ 20 Ohms resistor current?  _______

7.___ 50 Ohms resistor current?  _______

8. ___ sum 30 Ohm, 20 Ohm, 50 Ohm currents?

9. ____compare #3 and #8

10. ____30 Ohm voltage drop?  ________

11. ____20 Ohm voltage drop?  ________

12. ____50 Ohm voltage drop?  ________

13.           sum 30 Ohm, 20 Ohm, 50 Ohm voltages? ______

14.            compare #13 to battery?   _____

15. If the resistors were replaced by hotdogs, which ones would cook the fastest? Why?

16. For the parallel circuit, does adding more resistors (in parallel) increase or decrease the total current?

17. For the series circuit, does adding more resistors (in series) increase or decrease the total current?

 

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