Answered

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Eight 7.0W Christmas tree lights are strung in series to a 110 V light source. What is the resistance of each bulb?

Sagot :

Lanuel

Answer:

Resistance = 1728.57 Ohms

Explanation:

Given the following data;

Power = 7 Watts

Voltage = 110 Volts

To find the resistance of each bulb;

Mathematically, power can be calculated using the formula;

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

Making resistance the subject of formula, we have;

[tex] Resistance = \frac {Voltage^{2}}{power} [/tex]

Substituting into the formula, we have;

[tex] Resistance = \frac {110^{2}}{7} [/tex]

[tex] Resistance = \frac {12100}{7} [/tex]

Resistance = 1728.57 Ohms

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