Answered

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A ceiling fan operates at three speeds, using 120 v of electricity from the wall. At low speeds, it uses 0. 25 a. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.

Sagot :

A) The calculated resistance needed to generate the current at low speed is; R = 480 ohms

B) Resistance at medium and larger speeds are;

At medium speed; R is less than that at low speed

At larger speed; R is less than that at medium speed.

A) We are given;

Voltage; V = 120 V

Current at lower speed; I = 0.25 A

Formula for resistance here is;

R = V/I

R = 120/0.25

R = 480 ohms

B) This means that if larger currents are required at higher speeds, it means that lower resistance would be required.

Similarly at medium currents the resistance will be lesser than that at lower speed but greater than that at larger speeds.

Read more on ohms law at; https://brainly.com/question/1220677

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