If one light bulb is brigher than another, what must be true about how much ener

Question

If one light bulb is brigher than another, what must be true about how much energy per unit time is being carried out of the bulb through visible electromagnetic waves? 2. If two different light bulbs have the same current through them, but different potential differenc across them, what can be said about which one will be brighter and why? (Relate your answer to question 1.) 3. If two different light bulbs have the same potential difference across each of them but different currents through them, what can be said about which one will be brighter and why? (Relate you, answer to question 1.)

Explanation / Answer

1.The brighter bulb must be carrying out more energy (as visible electromagnetic waves) per unit time than the other bulb

2.the bulb having more potential difference would be brighter as power = VI.

3. the bulb having more current would be brighter.

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