Assignment:
Question 1. You connect a number of identical light bulbs to a flashlight battery. What happens to the brightness of each bulb as more bulb as more bulbs are added to the circuit if you connect them in a) series; b) parallel? Will the battery last longer if the bulbs are in series or parallel?
Question 2. In a two-cell flashlight, the batteries are usually connected in series. Why not connect them on parallel? What possible advantage could there be in connecting several identical batteries in parallel?
Question 3. The direction of current in a battery can be reversed by connecting it to a second battery of greater emf with the positive terminals of the two batteries together. When the direction of current is reversed in a battery, does its emf also reversed? Explain.
Provide complete and step by step solution for the question, use formulas.