Chapter 18, Problem 17P

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# (a) You need a 45-Ω resistor, but the stockroom has only 20.-Ω and 50.-Ω resistors. How can the desired resistance be achieved under these circumstances? (b) What can you do if you need a 35-Ω resistor?

(a)

To determine
The desired resistance of 45Ω resistor achieved under the certain circumstances.

Explanation

Given Info: The available resistors in the stockroom is 20â€‰Î© and 50â€‰Î© .

Explanation:

Let us consider that we need 45â€‰Î© resistor, but in the stockroom we have only 20â€‰Î© and 50â€‰Î© resistors to obtained desired value of resistance, we need to accomplish some circumstances.

Connect two 50â€‰Î© resistors in parallel combination,

Thus, we get 25â€‰Î© resistor then connect it in series combination with a 20â€‰Î© resistors to achieve desired value of resistor

(b)

To determine
The desired resistance of 35Ω resistor achieved under the certain circumstances.

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