The resistance of a 40W car head lamp, drawing current from a 12V battery is ____.
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Correct Answer: Option C
Explanation:
Power delivered to head lamp = \(\frac{V_2}{R}\)
 = 40W
 R = \(\frac{V_2}{40}\)
 = \(\frac{(12 × 2)}{40}\)
 = 3.6Ω
Power delivered to head lamp = \(\frac{V_2}{R}\)
 = 40W
 R = \(\frac{V_2}{40}\)
 = \(\frac{(12 × 2)}{40}\)
 = 3.6Ω