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College Physics

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

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BuyFindarrow_forward

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 20Ω and 50Ω .

Explanation:

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

Connect two 50Ω resistors in parallel combination,

1Rp=150Ω+150Ω=250ΩRp=50Ω2=25Ω

Thus, we get 25Ω resistor then connect it in series combination with a 20Ω 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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