You are given a number of 18 Q resistors, each capable of dissipating only 2.0 W without being destroyed. What is the minimum number of such resistors that you need to combine in series or in parallel to make a 18 Q resistance that is capable of dissipating at least 14.9 W? Number i Units

You are given a number of 18 Q resistors, each capable of dissipating only 2.0 W without being destroyed. What is the minimum number of such resistors that you need to combine in series or in parallel to make a 18 Q resistance that is capable of dissipating at least 14.9 W? Number i Units

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 55P: A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any...

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The- pair of capacitors in Figure P28.63 are fully charged by a 12.0-V battery. The battery is disconnected, and the switch is then closed. Alter 1.00 ms has elapsed, (a) how much charge remains 011 the 3.00-F capacitor? (b) How much charge remains on the 2.00-F capacitor? (c) What is the current in the resistor at this time?
A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?
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