In which combination series or parallel bulb will glow brighter?

A bulb of 12 volt rating will not glow brighter than another.
The question you are required to find out is not the wattage. You are looking for the lumins. This allows the light to be known as candle power effect. Pardon lumens.
According to your question, neither will work. They glow or do not glow. I can reduce the current and make the bulb be almost invisible of light.
lumens. Now use the encyclopedia as I release my belt.