A 9.0-W LED light bulb is turned on. It has an operating voltage of $120 \mathrm{V}$. (a) How much current flows through the bulb? (b) What is the resistance of the bulb? (c) How much energy is used each second?
Added by Christopher R.
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0 W and voltage = 120 V current = 9.0 W / 120 V = 0.075 A Show more…
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The power rating of a light bulb (such as a 100-W bulb) is the power it dissipates when connected across a 120-V potential difference. What is the resistance of (a) a 100-W bulb and (b) a 60-W bulb? (c) How much current does each bulb draw in normal use?
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