Wednesday

September 17, 2014

September 17, 2014

Posted by **Katie** on Sunday, May 22, 2011 at 8:07pm.

- Physics -
**Katie**, Sunday, May 22, 2011 at 8:08pmi mean 80 microfarads

- Physics -
**drwls**, Sunday, May 22, 2011 at 8:39pmThe time constant for charge decay is

RC = 3.6*10^-3 s, if your ì symbol means "micro"

For 80% of the initial energy, the charge must decrease to sqrt(0.8) = 89.4% of the initial value.

exp(-t/RC) = 0.894

t/RC = .1121

t = 4*10^-4 seconds

**Answer this Question**

**Related Questions**

physics - A fully charged 98 uF capacitor is discharged through a 125 ohms ...

Physics - A fully charged 90-µF capacitor is discharged through a 60-Ω ...

Physics - How long will it take the voltage across the capacitor in an RC ...

Physics - A capacitor of capacitance C= 10mF, is charged using a battery of ...

Physic II - Suppose a capacitor having a capacitance of C fully charged to a ...

Physics - A 6 uF capacitor is initially charged to 100V and then connected ...

physics - how a bleeder resistor (R = 260 k) is used to discharge a capacitor (...

physics - A 20.0 \mu F capacitor initially charged to 20.0 \mu C is discharged ...

Physics - An RC-circuit has a time constant of 6x10-3 seconds. The capacitor ...

College physics - Find the following currents. The current I_1 through the ...