What current flows through a hair dryer plugged into a 120 volt circuit if it has a resistance of 25 ohms

Current is 4.8 A.

Explanation:

We know that, from Ohm's law that for a current carrying conductor, the potential difference across it is directly proportional to the current flowing through it, keeping the physical properties same. From Ohm's law:

, where,

Now, plug in 120 for , 25 for and solve for . This gives,

Therefore, the current flowing through the hair dryer is 4.8 A.

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