Off to Europe! You plan to take your hair dryer to Europe, where the electrical outlets put out 240 V instead of the 120 V seen in the United States. The dryer puts out 1600 W at 120 V. (a) What could you do to operate your dryer via the 240-V line in Europe?

Video transcript

Hi, everyone in this practice problem, you're being asked to find a way so that Rob can use a blu-ray player in Singapore at Canada's standard 100 and 20 fold, Rob's aunt in Canada gave, gave him a 660 watt blu-ray player as a gift. Currently, Rob is reciting in Singapore where the electrical outlets output is 240 fold. The blu ray on the other hand, operates on 100 and 20 fold and we're being asked to find a way so that Rob can use the blu-ray player in Singapore at Canada's standard of 100 and 20 fold. The options given are a, a step up transformer with N one divided by N two equals half B A step down transformer with N two divided by N one equals half C A step up transformer with N one divided by N two equals two D, both B and C are correct. And lastly E A step down transformer with N two divided by N one equals a quarter. So for this particular practice problem, we have P one to be equals to 240 fault. And we have P two to be equals to 100 and 20 fault. And we know that uh the equation that we're going to use for transformers are N two divided by N one equals to P two divided by P one. And we wanna plug in the values for P two and P one in order to get the ratio or of N two divided by N one. So then plugging that NN two divided by N one will then equals to 100 and 20 fold divided by fold. And that will give us an N two divided by N one ratio of half. So according to this calculation right here, Rob then needs a step down transformer but uh N two divided by N one ratio of health and that will be the answer to this practice problem which will correspond to option B. So option B will be the answer to this particular practice problem and that will be it for this video. If you guys still have any sort of confusion, please make sure to check out our other lesson videos on similar topics. But other than that, that will be it for this one. Thank you.