An incandescent light bulb has a resistance of 240 ohm when lighted. What is the current when connected to a 120 V source?

Respuesta :

0.5 Amperes

Explanation

Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

so

[tex]Current=\frac{voltage}{resistance}[/tex]

so

Step 1

a) let

[tex]\begin{gathered} Resistnace\text{ =}240\text{ ohm} \\ voltage=\text{ 120 V} \end{gathered}[/tex]

b) now, replace in the formula and calculate

[tex]\begin{gathered} Current=\frac{voltage}{resistance} \\ I=\frac{120\text{ V}}{240\text{ ohm}} \\ I=0.5\text{ Amperes} \end{gathered}[/tex]

therefore, the answer is

0.5 Amperes

I hope this helps you

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