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Simple Resistive Circuits: Determine the range of resistor values.

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Consider the circuit in the attachment. Determine the range of resistor (R) values for which the following two conditions will be true.

V >= 15 V
P_R >= 5 W (P_R is used to indicate P subscript R).

Express your final answer to the nearest Ohm.

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Solution Summary

The expert examines simple resistive circuits in order to determine the range of resistor values.

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Please see the attached solution.

If it is a single problem which needs to meet both the power and voltage number, Here is what I would do.

P = V ^ 2 / ...

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