March 28, 2017

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In the circuit above, the resistors all have the same resistance. The battery, wires, and ammeter have negligible resistance. A closed switch also has negligible resistance.
Closing which of the switches will produce the greatest power dissipation in R2?

S1 only

S2 only

S1 and S2 only

S1 and S3 only

S1, S2, and S3

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