Question

You have two resistors, R1 and R2, and you know that R1 = 10 kΩ. You...

  1. You have two resistors, R1 and R2, and you know that R1 = 10 kΩ. You set up the voltage divider circuit shown in Fig. 7.9 where the battery voltage, V0, is 9 V. You measure Vout to be 3 V. What is the value of R2?

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Answer #1

The concept used is of voltage dividing rule as here voltage is divided in the ration of their resistance , as input voltage by the battery and output voltage is given so unknown resistance can be easily be calculated.

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