When a resistor is connected to a 12 V source, it draws a 185 mA current. The same resistor connected to a 90 V source draws a 1.25 A current. a) What is the resistance in both cases? R1 = _____ Ω R2 = _____ Ω b) Is the resistor ohmic? A - Yes. B - No.
When a resistor is connected to a 12 V source, it draws a 185 mA current. The same resistor connected to a 90 V source draws a 1.25 A current. a) What is the resistance in both cases? R1 = _____ Ω R2 = _____ Ω b) Is the resistor ohmic? A - Yes. B - No.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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When a resistor is connected to a 12 V source, it draws a 185 mA current. The same resistor connected to a 90 V source draws a 1.25 A current.
a) What is the resistance in both cases?
R1 = _____ Ω
R2 = _____ Ω
b) Is the resistor ohmic?
A - Yes.
B - No.
c) What is the rate of Joule heating in this resistor in both cases?
P1 = ____ W
P2 = ____ W
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