A device consumes 100 W of power when connected to a 120 V source. Calculate
PHYSICSWAEC 2019
A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance.
- A. 1.2\(\Omega\)
- B. 12,000 \(\Omega\)
- C. 20.0\(\Omega\)
- D. 144\(\Omega\)
Correct Answer: A. 1.2\(\Omega\)
Explanation
R = \(\frac{v}{I}\)
= \(\frac{120}{100}\)
= 1.2\(\Omega\)
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