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1. A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply. If the potential drop across the 124-? resistor is 12 V, what is the exact potential drop (in V) across the 163-? resistor? 2. A 207-? and a 216-? resistor are connected in series across an unspecified power supply. If the current through the 207-? resistor is 0.45 A, what is the exact current (in A) through the 216-? resistor? 3. Three resistors are connected in series across a 19-V power supply. If the potential drops across resistors 1 and 2 are 3.6 volts and 3.3 volts, what is the exact potential drop (in volts) across resistor 3?

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