Author Question: A battery is used to light two bulbs as shown. What happens to bulb B when bulb A is unscrewed from ... (Read 78 times)

sabina · **on:** Jul 28, 2018

A battery is used to light two bulbs as shown. What happens to bulb B when bulb A is unscrewed from its socket?

1.Bulb B goes out.
2.Bulb B gets noticeably dimmer, without going out.
3.Bulb B gets slightly dimmer.
4.Bulb B's brightness stays the same.
5.Bulb B gets slightly brighter.
6.Bulb B gets noticeably brighter.
7.Impossible to determine

Question 2

A battery is used to light a bulb as shown. A second bulb is connected by closing switch S. What happens to the bulbs?

1.The right bulb goes out; the left bulb lights up.
2.The right bulb gets noticeably dimmer; both bulbs have the same brightness.
3.The right bulb gets very slightly dimmer; both bulbs have the same brightness.
4.The right bulb's brightness stays the same; both bulbs have the same brightness.
5.The right bulb gets slightly brighter; both bulbs have the same brightness.
6.The right bulb gets noticeably brighter; both bulbs have the same brightness.
7.The right bulb stays the same; the left bulb does not light.
8.Impossible to determine