Final answer:
The power consumption of the circuit requires more information about the circuit's configuration and the behavior of voltage over time after the switch is moved. The symbol ψ represents the time constant, which is central to calculating power consumption in RC or RL circuits, and the information provided is insufficient to determine the power consumption accurately.
Step-by-step explanation:
The student's question pertains to the power consumption of a circuit at a specified time after a switch has been moved to position b. Given values include Vo = 12 V (the voltage supply), C = 2 μF (the capacitance), R1 = 4 Ω (the resistance of resistor 1), and R2 = 15 Ω (the resistance of resistor 2). The power consumption can be determined using the formula P = V^2 / R, where V is the voltage across the resistor, and R is the resistance. However, without additional context regarding the circuit's configuration and the precise time denoted by '3 2 τ', it's not possible to provide a definitive answer. The symbol τ (tau) typically represents the time constant in an RC (resistor-capacitor) or RL (resistor-inductor) circuit, which is calculated based on the circuit elements involved. To find the power consumption, the voltage across the specific resistor at the given time must be known. More information about the circuit is necessary to determine the power consumption accurately.