Question

A hair dryer draws a current of 10 A plugged into a 120 V outlet. What is the resistance of the hair dryer?

Answer 1

Answer: The resistance of the hair dryer is $12\Omega$

Explanation:

Ohm's law is defined as the law which gives us the relationship between voltage, resistance and current.

Mathematically,

$V=I\times R$

where,

V = voltage of the hair dryer = 120 V

I = current of the hair dryer = 10 A

R = resistance of the hair dryer = ?

Putting values in above equation, we get:

$120=10\times R\\\\R=\frac{120}{10}=12\Omega$

Hence, the resistance of the hair dryer is $12\Omega$

Answer 2

The resistance of the hair dryer is 12 ohms

What is Resistance ?

Resistance can be described as the amount of current that flows in a circuit

Write out the parameters

Current= 10 A

Voltage= 120 V

Formular

Voltage= current × resistance

120= 10 × resistance

resistance= 120/10

= 12 ohms

Hence the resistance of the hair dryer is 12 ohms

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