Phy 202 Quiz 14 February 11, 2008

1. A single wire across the top of the compass causes a deflection of 30° in needle. If it is now curved back under the compass lined up with the wire on top, the needle will now have:

a. No deflection at all.

b. Only slightly less deflection.

c. Only slightly more deflection.

d. Same deflection in the opposite direction.

e. Twice the deflection in the same direction.

2. Given the following three demonstrations, assuming all the filiments are made of the same material, rank the bulbs in terms of diameter of filiments.