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E = I R = 22 x 7 = 154 volts.

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Q: How many ohms of resistance are in a 120 and ndashvolt hair dryer that draws 7.6 amps of current?
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What is the resistance of a hair dryer that draws 12A when plugged into a 220V line?

Your hair dryer has a resistance of 220/12 = Ohms. (I'm sure you can do the math.)


An electric clothes dryer has a resistance of 16 ohms It draws 15 A of current What is the voltage in volts of the wall outlet that it is plugged into?

We know that Voltage = Current x Resistance, so if E = I x R, then E = 20 x 12 = 240 volts, and the dryer must be plugged into a 240 volt outlet.


An electric clothes dryer has a resistance of 8 ohms It draws 30 A of current What is the voltage in volts of the wall outlet that it is plugged into?

Power (Watts) = Current (Amps) * VoltagePower = 22Amps * 240 VoltsPower = 5,280 Watts5280


The resistance of this wire is 7.7 if the current through the wire equals 15.6 what is the voltage across the terminal of the hair dryer?

The formula you are looking for is E = I x R.


How much power in watts does an electric clothes dryer use if it draws 20 amps of current from a 240 volt wall outlet?

4800 watts because watts = volts x amps.


What is the resistance of a 1100 W 120V hair dryer?

Resistance=Voltage2/Power =1202/1100 =13.1 (3sf)


Why a hair dryer has a high- heat setting with a lower resistance than the low-heat setting?

Because a higher resistance would have resulted in more heat loss, but the higher is he current, the more energy is lost to heat. Therefore, a lower resistance would release more heat.AnswerPower is equal to voltage squared divided by resistance. So, for a given voltage, the lower the resistance the higherthe power.


An electric clothes dryer draws 15 A of current from a 240-V wall outlet How much power in watts does it use?

watts = volts X amps, so: 15A X 240V = 3600 watts


Which type of appliance draws a surge current at the time of starting?

Appliances with motors or compressors are associated with surge current at start up. That is because it takes more energy to get the motor turning and less current to keep it spinning once it is at speed. Some types of appliances that fall into this category would include refrigerators (Compressor), washing machine, dryer, air conditioner and so on.


Can you convert a 220 dryer into a 110 dryer?

Yes, it's called a step-up transformer because, if I understand correctly, you want to step up from a 110v power source to run a 220v dryer. Depending on the power (wattage) rating of the dryer, it will probably cost as much as having 220v service installed by an electrician. Furthermore, the 110v circuit must be fused for at least twice the current rating of the dryer, assuming the transformer is 100% efficient. This is because Power = Voltage x Current. If you halve the voltage (220 --> 110), you must double the current in order to maintain the same power rating. For example, if the dryer normally draws 20 amps at 220 volts, it will require at least 40 amps from a 110 volt circuit. This would require a 4000 volt-amp transformer-- a very pricey item indeed. If you opt for such a unit I would certainly consult a certified electrician.


Dryer prong looks burnt but it worked?

This could cause a problem with higher resistance. You should replace.


Why does the furnace kick out the breaker?

The only reason the dryer breaker will trip is it senses an overload or a short circuit on the circuit. To test this unplug the dryer and see if the breaker will stay latched. If it does then the wiring to the receptacle is not at fault. If you want to delve further into the problem, leave the dryer unplugged and remove the inspection panel at the back of the dryer and check the connections. Sometimes the screw terminals become loose and corroded and cause the dryer to draw more current. To compensate for the higher resistance at the faulty terminals the dryer will try to draw more current that the breaker will allow. If everything looks good after trying both of these things it is time for a repairman to come in and look at the dryer itself, as the fault is probably an internal problem within the dryer body.