Q1) Joe decided to make a bulb light up brighter. What should he do?
Q2) Using the same number of batteries, does arranging two bulbs in parallel cause the bulbs to be brighter as compared to arranging the two bulbs in series?
Q3) For bulbs arranged in parallel, does it require more batteries for them to shine as brightly as compared to bulbs arranged in series?
Q4) Do batteries arranged in parallel have a longer life span as compared to those arranged in series?
1. He can either use more batteries arranged in series, or use a higher voltage battery, however, he has to be careful not to exceed the maximum voltage, else the bulb will fuse.
2. Yes. Bulbs arrange in parallel will shine brighter than bulbs arranged in series, with the same no. and battery arrangement. The current flowing through bulbs in series are lower due to higher resistance than the current flowing through bulbs in parallel.
3. No. same explanation as 2.