Sketch the current in an RL circuit over time.

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…

The circuit was in DC steady state for t < 0.  A quantity absolutely cannot change suddenly in this circuit, and in general unless nothing else can happen.  It must be continuous across the switch opening.  Which is that quantity?  (The battery voltage also remains constant; that's not the answer I'm looking for.)   Please see photos for more details

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