Have you ever
wondered what happens if you try to light up two lamps (light
with one battery? How do you connect them? How many different
ways you may connect two lamps to one battery? Does the
connection arrangement affect the amount of light in each lamp?
If you can modify the amount
of electricity available to each lamp, you will be able to
adjust the amount of light and you can safely use a strong
battery to light up many low voltage lamp.