Two Types of Philosophizing / Approaches in Doing Philosophy. "How we see things" / "Points of View"

Solved

Show answers

Ответ:

Iamjungshook

04.05.2021

Physics

Explanation:

Given

Circuit breaker current is $I=20\ A$

Power of the light bulb is $P=100\ W$

Voltage of the DC-circuit is $V=120\ V$

If the resistance are connected in parallel, they must have same voltage i.e. 120 V

So, Resistance is given by

$\Rightarrow R=\dfrac{V^2}{P}\\\\\Rightarrow R=\dfrac{120^2}{100}\\\\\Rightarrow R=144\ \Omega$

For the 20 A current and 120 V battery, net resistance is

$\Rightarrow R_{net}=\dfrac{120}{20}\\\\\Rightarrow R_{net}=6\ \Omega$

Suppose there are n resistance in the circuit connected in parallel.

$\Rightarrow \dfrac{144}{n}=R_{net}\\\\\Rightarrow n=\dfrac{144}{6}\\\\\Rightarrow n=28.8\approx 28\ \text{for current to be less than 20A}$

Thus, there can maximum of 28 bulbs.

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

Answers on questions: Physics

Ask an AI advisor a question

I want advice