Question

PLEASE HELP!!!
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.

Answer 1

(a) The resistance needed to generate that current is 480 ohms.

(b) When the current increases, the resistance in the circuit decreases.

The given parameters;

• Voltage, V = 120 V
• Current, I = 0.25 A

The resistance needed to generate that current is calculated as follows;

$V = IR\\\\R = \frac{V}{I} \\\\R = \frac{120}{0.25} \\\\R = 480 \ ohms$

When the current increases, the resistance in the circuit decreases.

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