Q1: When a capacitor is used in place of a resistor in an op-amp network, its placement determines:

ANS:B - integration or differentiation

When a capacitor is used in place of a resistor in an op-amp network, there capacitance defined the measure of a capacitor's opposition to change in voltage hence, greater the capacitance, the more the opposition. Capacitors oppose voltage change by creating current in the circuit: that is, they either charge or discharge in response to a change in applied voltage. So, the more capacitance a capacitor has, the greater its charge or discharge current will be for any given rate of voltage change across it.