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Unformatted text preview: chargers (which we assume requires 2 hours), what is the total battery-charging current in the U.S. in Amps? c) How much power in Watts is used during the battery charging? 3. U&M Problem 1.17. Also, find the sum of the power in all the elements, using the passive sign convention. 4. A commonly available type of resistor is rated at 1 W “power dissipation,” meaning this amount of power can be dissipated continuously in the resistor without damage. a) Determine the maximum allowable DC voltage you may apply across an 82 Ω resistor, while keeping within the 1W power limit. b) Another limitation is the resistor’s breakdown (or “flashover”) voltage, when the current will arc across the leads. For a typical 1 W resistor, flashover occurs at around 200 V. What is the maximum resistance that you can use, that is consistent with both the flashover and power dissipation limits?...
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This note was uploaded on 11/02/2011 for the course E 05421 at Stanford.