MelisaWithey
Answered

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The current flowing through a lamp is 1.5 A. It is plugged into a 120-V outlet. What is the resistance of the lamp

Sagot :

AL2006

Resistance =  (voltage) / (current) =

                       (120 V) / (1.5 A)  =  80 ohms .

Explanation:

According to ohm's law, current flowing through a conductor is directly proportional to the voltage over resistance.

Mathematically,       I = [tex]\frac{V}{R}[/tex]

where,     I = current

               V = voltage

                R = resistance

It is given that value of voltage is 120 V and current is 1.5 ampere. Therefore, calculate the resistance as follows.

                            I = [tex]\frac{V}{R}[/tex]

or,                         R = [tex]\frac{V}{I}[/tex]

                                = [tex]\frac{120 V}{1.5 A}[/tex]

                                = 80 volts per ampere

                               = 80 ohms

Hence, resistance of the lamp is 80 ohms.

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