Answered

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A lamp draws a current of 0.50 A when it is connected to a 120 V source. What is the resistance of the lamp?1) 4.17 10-2 ω2) 60 ω3) 2.4 102 ω4) 24 102 ω

A Lamp Draws A Current Of 050 A When It Is Connected To A 120 V Source What Is The Resistance Of The Lamp1 417 102 Ω2 60 Ω3 24 102 Ω4 24 102 Ω class=

Sagot :

Given data:

* The voltage of the given source is,

[tex]V=120\text{ Volts}[/tex]

* The current through the lamp is,

[tex]I=0.5\text{ A}[/tex]

Solution:

By the Ohm's law,

[tex]V=IR[/tex]

where R is the resistance of the lamp,

Substituting the known values,

[tex]\begin{gathered} 120=0.5\times R \\ R=\frac{120}{0.5} \\ R=240\text{ }\Omega \\ R=2.4\times10^2\text{ }\Omega \end{gathered}[/tex]

Thus, 3rd option is the correct answer.

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