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College Physics
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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Suppose ε = 10.0 V , R1 = 190 Ω , and R2 = 310 Ω . (Figure 1 attached)

Please help me to conceptualize what value of R3 would be selected so the battery supplies 23.5 mA ?

                 

ww R
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Expert Solution
Step 1

We know:

In the given circuit, R, and R3 are in parallel R.R 1 Therefore, the combined resistance will be, R2g R2+R 1 1 R R 310R3 310 R or.R,3 310R 190 Total resistance,Rr = R\ + R23* 310 R
Step 2

Then,

Votage Current, I Total Re sis tan ce 10 or,I 310 R 190 310 R 10 or,0.0235 58900 190R 310 R 310R3 58900 500 R 10 or 310 R3 0.0235 or,1384.15 11.75R, = 3100 +10 R R3 980.486 or
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