What Resistor Value Discharges a Capacitor 99% in 5 Seconds?

[Kajan thana]

Homework Statement

.50uf capacitor is charged connecting it to a 6.0v battery then discharged through 100k ohm resistor.
. Question: Estimate the resistance of the resistor that you would use in place of the 100k ohm resistor if the discharge is to be 99% completed within about 5 secs.

Homework Equations

The Attempt at a Solution

I used voltage instead of charge.

99% of 6V in 5.94V which is discharged in 5 seconds.

5.94/6= e^-5/CR

Then make the R the subject gave 995x10^5 ohm. The answer is wrong, help me please.

 

[ehild]

Homework Statement

.50uf capacitor is charged connecting it to a 6.0v battery then discharged through 100k ohm resistor.
. Question: Estimate the resistance of the resistor that you would use in place of the 100k ohm resistor if the discharge is to be 99% completed within about 5 secs.

Homework Equations

The Attempt at a Solution

I used voltage instead of charge.

99% of 6V in 5.94V which is discharged in 5 seconds.

5.94/6= e^-5/CR

Then make the R the subject gave 995x10^5 ohm. The answer is wrong, help me please.

The discharge is 99% complete when the charge or voltage on the capacitor is 1% of the initial value.