Question

If it takes you 5 minutes to dry your hair using a 1200-W hairdryer plugged into a 120-V power outlet, how many Coulombs of charge pass through your hair dryer

Answer 1

The charge pass through your hair dryer is 3000 C.

Step-by-step explanation:

Given that,

Power = 1200 W

Voltage = 120 V

Flow time = 5 min

We need to calculate the current

Using formula of power

`P=VI`

`I=(P)/(V)`

Put the value into the formula

`I=(1200)/(120)`

`I=10\ A`

We need to calculate the charge pass through your hair dryer

Using formula of current

`I=(Q)/(t)`

`Q=It`

Put the value into the formula

`Q=10*5*60`

`Q=3000\ C`

Hence, The charge pass through your hair dryer is 3000 C.