Question

In: Physics

A hair dryer, rated at 1875 watts, operates on a 120V voltage source. What is its...

A hair dryer, rated at 1875 watts, operates on a 120V voltage source.

What is its resistance? in Ohms

How much current does it use? in A

Solutions

Expert Solution

Voltage source the hair dryer operates on = V = 120 V

Power the hair dryer is rated at = P = 1875 W

Resistance of the hair dryer = R

R = 7.68

Current used by the hair dryer = I

V = IR

120 = I(7.68)

I = 15.6 A

a) Resistance of the hair dryer = 7.68

b) Current used by the hair dryer = 15.6 A


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