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According to ohm's law what is the resistance of a light bulb if the applied voltage is 21 volts and the current is 3 amps?
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According to ohm's law what is the resistance of a light bulb if the applied voltage is 21 volts and the current is 3 amps?

User Sherann
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resistance = voltage/current = 21/3 = 7Ω
User Luisgepeto
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