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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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Section
BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Suppose you have three identical lightbulbs, some wire, and a battery. You connect one lightbulb to the battery and take note of its brightness. You add a second lightbulb, connecting it in parallel with the previous lightbulbs, and again take note of the brightness. Repeat the process with the third lightbulb, connecting it in parallel with the other two. As the lightbulbs are added, what happens to (a) the brightness of the lightbulbs? (b) The individual currents in the lightbulbs? (c) The power delivered by the battery? (d) The lifetime of the battery? (Neglect the battery’s internal resistance.)

(a)

To determine

The brightness of the bulbs.

Explanation

The brightness of the bulb depends on the potential difference across the bulb. Since, the potential difference is constant across the bulbs in ...

(b)

To determine

The individual currents in the bulbs.

(c)

To determine

The power delivered by the battery.

(d)

To determine

The lifetime of the battery.

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