Homework to submit on Friday

Circuit questions to TURN IN ON FRIDAY (in class)

1.  Describe the difference between voltage, current, and resistance.  Give the proper units, too.

2.  What is the resistance of a light bulb that allows 2 A of current through it when connected to a 12-V battery?

3.  A 5-ohm resistor is connected to a 10-volt battery. What current goes through the resistor?
4.  You have 2 bulbs in series (one right after the other) - remove one (unscrew it) and what happens to the brightness of both bulbs?  (See picture below.)
5.  You have 2 bulbs in parallel (both connected to the same voltage source) - remove one (unscrew) and what happens to the brightness of both bulbs?  (See picture below.)
6.  Draw a schematic for 2 resistors in series with a battery and switch, using the correct symbols.

7.  Recall the recent mini-lab we completed where we compared current to resistance.  Draw an approximate graph of current vs. resistance, assuming that the voltage is held constant (as it was in the lab)?

                                      Bulbs in Parallel                          Bulbs in Series


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