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RC Circuit: Dis-Charging We now continue the problem when the switch has been closed for a very long time, and the capacitor is now fully charged. At time t = 0, the switch is re-opened. Begin the problem by re-drawing the circuit for t → o. T = ms 4. Determine the time constant, t, of the discharging circuit in milliseconds [ms]. 5. Determine Q(topen), the charge on the capacitor at the time topen us (in microseconds) after the switch was re-opened, in microcoulombs. Q(topen) : 6. Determine I2. max, the maximum current that flows through resistor R2 (after the switch has been opened) in milliamperes [mA]. A positive value for the current is defined to be in the direction of the arrow shown %3D max

RC Circuit: Dis-Charging We now continue the problem when the switch has been closed for a very long time, and the capacitor is now fully charged. At time t = 0, the switch is re-opened. Begin the problem by re-drawing the circuit for t → o. T = ms 4. Determine the time constant, t, of the discharging circuit in milliseconds [ms]. 5. Determine Q(topen), the charge on the capacitor at the time topen us (in microseconds) after the switch was re-opened, in microcoulombs. Q(topen) : 6. Determine I2. max, the maximum current that flows through resistor R2 (after the switch has been opened) in milliamperes [mA]. A positive value for the current is defined to be in the direction of the arrow shown %3D max

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C = 46 microF, R1 = 41 ohms, R2 = 25 ohms, R3 = 90 ohms, R4 = 45 ohms, t open = 620 microseconds, and a 20 V battery.

R1 ww R2 ww 12 + R3 Vbat C R4 ww
Transcribed Image Text:R1 ww R2 ww 12 + R3 Vbat C R4 ww
RC Circuit: Dis-Charging We now continue the problem when the switch has been closed for a very long time, and the capacitor is now fully charged. At time t = 0, the switch is re-opened. Begin the problem by re-drawing the circuit for t → o. T = ms 4. Determine the time constant, t, of the discharging circuit in milliseconds [ms]. 5. Determine Q(topen), the charge on the capacitor at the time topen us (in microseconds) after the switch was re-opened, in microcoulombs. e(topen) = 6. Determine I2 switch has been opened) in milliamperes [mA]. A positive value for the current is defined to be in the direction of the arrow shown the maximum current that flows through resistor R2 (after the max 12, max mA
Transcribed Image Text:RC Circuit: Dis-Charging We now continue the problem when the switch has been closed for a very long time, and the capacitor is now fully charged. At time t = 0, the switch is re-opened. Begin the problem by re-drawing the circuit for t → o. T = ms 4. Determine the time constant, t, of the discharging circuit in milliseconds [ms]. 5. Determine Q(topen), the charge on the capacitor at the time topen us (in microseconds) after the switch was re-opened, in microcoulombs. e(topen) = 6. Determine I2 switch has been opened) in milliamperes [mA]. A positive value for the current is defined to be in the direction of the arrow shown the maximum current that flows through resistor R2 (after the max 12, max mA
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