## What is the resistance of a 1500 w ( 120 v) hair dryer? b. what is the current in the hair dryer when it is used?

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## Answers ( 2 )

a) power = IV

From ohms law. I =V/R

So, Power = VV/R

Therefore, R (resistance) = VVu00f7 Power

R = (120×120)u00f7 1500

=

9.6 ohs.b) From ohm’s law, V=IR

So, I = V/R

= 120u00f7 9.6

=

12.5 AOhm’slaw claims that thevoltageacross aconductoris directly proportional to thecurrentflowing through it.(a) The

resistanceof thehairdryerwill be9.6 ohms.(b)the

currentin the hairdryer will be12.5 A.When all

physical parametersandtemperatureare constant,Ohm’s law claims that the voltage across a conductor is directly proportional to the current flowing through it.

This

current–voltageconnection may be expressed mathematically as,The Equation of

Ohm’s LawV=IR

(a)

The following data are given as

P = 1500 w

v = 120 v

The

power generatedin the hairdryer[tex]rm{P = vI}I=frac{P}{v} I=frac{1500}{120}I=12.5 A}[/tex]

To obtained the

resistance[tex]rm R=frac{v}{I} rm R=frac{120}{12.5} R= 9.6 ohm}[/tex]

Hence the

resistanceof thehairdryerwill be 9.6 ohms.(b)

The Equation of

Ohm’s LawV=IR

[tex]rm I =frac{V}{R} rm I =frac{120}{9.6} I= 12.5 A[/tex]

Hence the

currentin thehairdryerwill be12.5 A.To learn more the

ohm’s lawrefer to the link;https://brainly.com/question/796939