The voltage, V, (in volts) across a circuit is given by Ohm's law: V = IR, where I is the current (in amps) flowing through the circuit and R is the resistance (in ohms). If we place two circuits, with resistance R1 and R2, in parallel, then their combined resistance, R, is given by = R 1 1. 1 + R1 - Suppose the current is 3 amps and increasing at 10-2 amp/sec and R1 is 6 ohms and increasing at 0.5 R2 ohm/sec, while R2 is 9 ohms and decreasing at 0.2 ohm/sec. Calculate the rate at which the voltage is changing. Round your answer to three decimal places. volts/sec

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