Question #27

Two light bulbs with different power (wattage) levels are attached in parallel (the usual way for household power distribution) across a 110 volt AC source. The higher power bulb (the larger bulb physically) glows more brightly, as seen in the photograph below.

Now suppose that the two bulbs are wired in series across the same 110 volt AC source. Which of the three possibilities given below will result?

• (a) The larger bulb will glow more brightly.
• (b) The smaller bulb will glow more brightly.
• (c) The bulbs will be equally bright.

Click here for Answer #27 after August 28, 2000.

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