A light bulb operating at a dc voltage of 120 V has a power rating of 60 W. How much current is flowing through this bulb

Physics

1 answer:

densk [106]2 years ago

8 0

Voltage=V=120V
Power=P=60W

Current=I

$\\ \rm\rightarrowtail I=\dfrac{P}{V}=\dfrac{60}{120}=\dfrac{1}{2}=0.5A$

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The length at the final temperature is 11.7 cm.

Explanation:

We need to use the thermal expansion equation:

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Where:

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So, we have:

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