A hair dryer draws 6.0 A when plugged into a 120-V line. (a) What is its resistance? (b) How much charge passes through it in 15 min?

Danyim asked Oct 18, 2023

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Danyim asked Oct 18, 2023

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7 votes

We will have the following:

$R=(120V)/(6A)\Rightarrow R=20\Omega$

$Q=(6A)(15min\ast(60s)/(1min))\Rightarrow Q=5400W$

So, the charge is 5400 W in 15 minutes.

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