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An electrical substation had a sudden discharge arc event lasting 0.005 seconds.  The event produced 768,000 volts that conducted 500 amperes to a nearby grounded metal strap and opened a 500 ampere protective breaker. (a) How much power was produced by the electrical discharge? (b) How much energy was in the discharge? (c) How long could a 75 watt light bulb stay lit, if all the energy in the arc was used to operate it?
I need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)
Find Rth at open terminals using a 1V test source.
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