Compare the brightness of two bulbs

Which bulb is brighter between bulb b and bulb c when the switch is closed? Bulb b (60-W) is brighter than bulb c (25-W).

Power Ratings Comparison

Explanation: In order to compare the brightness of bulb b with the brightness of bulb c, we need to consider the power ratings of the bulbs. The power output of an electric circuit is determined by factors other than voltage alone.

Bulb Brightness Analysis

Let's compare a 25-W bulb with a 60-W bulb. Although both bulbs operate at the same voltage, the 60-W bulb emits more light intensity than the 25-W bulb, meaning it is brighter. Thus, bulb b (60-W) is brighter than bulb c (25-W).

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