How to Calculate Total Power of Bulbs in Series and Parallel Connection

What is the total power when a 40W bulb and a 60W bulb are connected in parallel across a source?

A. 80W

B. 100W

C. 50W

Answer:

The total power when a 40W bulb and a 60W bulb are connected in parallel across a source is 80W.

When the 40W and 60W bulbs are connected in parallel across a source, the total power is equal to the sum of their individual powers, which is 80W. Connecting bulbs in parallel means that each bulb has the same voltage across it, resulting in the total power being the sum of the individual powers.

For example, a 40W bulb and a 60W bulb when connected in parallel across a source would result in a total power of 100W (40W + 60W = 100W).

Therefore, when bulbs are connected in parallel, the total power can be calculated by summing the individual powers of each bulb.
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