can someone help me with A and C ? please

n a (4%) Problem 26: Energy in a discharging RC circuit: An RC circuit includes a basic switch, In position "a", the battery, resistor and capacitor are connected in series, and the capacitor charges, In position "b", the battery is replaced with a short, and the capacitor will discharge Two voltmeters and an ammeter have been added to the circuit. 43 13% Part (a) The switch has been in position "a" for a relatively long period of time allowing the capacitor to become fully charged. Data collection begins at the instant the switch is moved from position "a" to position "b" , and the fully charged capacitor is allowed to discharge. Enter an expression for the charge on the capacitor as a function of time starting from the instant the switch was moved to position "b". 13% Part (b) Enter an expression for the maximum value of the current passing through the ammeter while the capacitor is discharging. 11mm 2 VO/R I/ Correct! 88 13% Part (c) Enter an expression for the current passing through the ammeter while the capacitor is discharging. You answer must be expressed in terms of the maximum current, I max , obtained in the previous step, Grade Summary 10) = I Deductions Potential 100%