What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if its primary has 490 turns, its secondary 8 turns, and the input voltage is 119 V? b) What input current (in mA) is required to produce a 4.00 A output? c) What is the power input (in W)

Most household power in North America is 120? alternating current (VAC). However, some high-power appliances such as electric ranges and clothes dryers typically require a special 220?circuit. In this problem, you will calculate the energy, power, and current required by a dryer. You will also compare different methods of storing the energy required to run this appliance in a typical drying cycle. Consider a dryer that operates on 220?electricity, and it consumes an average power of 3000?. For this homework, the “Alternating Current” part of the story is irrelevant, so please use our ordinary DC equations (Perhaps this dryer has been specially made for physics experiments so it has a second input that allows it to operate on DC voltage as well!) A cubic meter of “natural gas” (mostly methane) at atmospheric pressure contains about40?? of usable energy. How much natural gas (in m3) would it take to power the dryer for 30minutes? Do some googling, and make an estimate (that means getting…

A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected to a 18-V source. (a) What is the voltage output of the secondary? V(b) If 3 A flows in the primary coil, how much current is there in the secondary coil? A

A transformer has 472 turns on its primary and 108 turns on its secondary. (a) Is this a step-up or a step-down transformer?   (b) If a voltage of 103 V is applied to the primary and a current of 0.4 A flows in these windings, what are the voltage output of the secondary and the current in the secondary?voltage  Vcurrent  A