posted by Sandhya .
A 12 V battery is connected to 5 mega ohm resistor and a 6 micro farad capacitor and an open switch. After how many seconds will the voltage across the resistor reach 9 V?
Suppose the battery is replaced by 12 V ac with a frequency of 60 Hz.Calculate the Irms in the circuit
If the resistor is 9v, the capacitor is 3 volts.
take the ln of each side, solve for t.
check my typing, my eyes are blurry this am.
Now for the ac part, Z=5E6+1/(2PI60)*6E-6 figure that, it is nearly all resistive.
I can check your work on this.