Answered

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How much power is required to light a lightbulb at 100V of voltage when the lightbulb has a resistance of 500 Ohms?

Sagot :

Lanuel

Answer:

Power = 20 Watts

Explanation:

Given the following data;

Voltage = 100 V

Resistance = 500 Ohms

To find the power that is required to light a lightbulb;

Mathematically, power can be calculated using the formula;

[tex] Power = \frac {Voltage^{2}}{resistance} [/tex]

Substituting into the formula, we have;

[tex] Power = \frac {100^{2}}{500} [/tex]

[tex] Power = \frac {10000}{500} [/tex]

Power = 20 Watts

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