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Answered

Why does adding the numbeof volts make the bulb brighter?​

Why Does Adding The Numbeof Volts Make The Bulb Brighter class=

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Answer:

When the voltage is increased, the current through the bulb has to increase as well, because of Ohm's law: I=V/R which means that if V increases, so does I. ... If this extra resistor is part of the bulb's filament (so we now have a different bulb), then that extra power will make the bulb brighter, because P=V∗I.

Hehebulokpoakongtaogo

Answer:

Does a mirror double the output of a light bulb?

The amount of light emitted by the bulb is always same. The wall behind the bulb reflects light incident on it partially. A mirror introduced behind it will reflect the light almost completely to one side, thus increasing the light in the room which would have lost to the wall. So a point P in the room is illuminated from two sources as shown, one by direct rays and other by reflected rays.

Explanation:

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