Question: The current through the 20- resistor in Fig. 19-81 does not change whether the two switches S1 and S2 are both open or both closed.

The current through the 20-Î© resistor in Fig. 19-81 does not change whether the two switches S1 and S2 are both open or both closed. Use this clue to determine the value of the unknown resistance R.

20 2 S2 10 ww- 50 6.0 V ww

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