Question
An electric kettle that draws 12A when plugged into a 120 V source has an element with a resistance of. A) 0.1 ohms. B) 10 ohms. Oc) 1200 ehms. D) 1440 ohms.
Solution
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IvanElite · Tutor for 8 years
Answer
The correct answer is B) 10 ohms.<br /><br />Here's how to calculate the resistance:<br /><br />* **Ohm's Law:** Ohm's Law states the relationship between voltage (V), current (I), and resistance (R). It's expressed as V = I * R.<br /><br />* **Rearranging the formula:** To find the resistance, we rearrange Ohm's Law to R = V / I.<br /><br />* **Plugging in the values:** We know the voltage (V) is 120V and the current (I) is 12A. So, R = 120V / 12A = 10 ohms.<br />
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