What will be resistance of a bulb rated 10W – 220V?
Question
What will be resistance of a bulb rated 10W – 220V?
Solution
Sure, to find the resistance of a bulb, we can use Ohm's law and the power formula. Here are the steps:
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We know that Power (P) = Voltage (V) * Current (I). So, we can find the current by rearranging this formula to I = P / V.
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Substituting the given values, we get I = 10W / 220V = 0.0455 Amps.
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Now, we can use Ohm's law, which states that Voltage = Current * Resistance (V = I * R). We can rearrange this to find Resistance (R) = V / I.
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Substituting the values we have, we get R = 220V / 0.0455 Amps = 4835.16 Ohms.
So, the resistance of the bulb is approximately 4835 Ohms.
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