a capacitor 'c' is being charged by connecting it across a dc source along with an ammeter. will the ammeter show any deflection momentary during the process of charging? if so, how would you explain this momentary deflection and the resulting continuity of current in the circuit? write the expression for the current inside the capacitor.
Graphs of charge vs time and current vs time for charging capacitors are shown below. Mathematically, both of these graphs are exponential functions - current is an exponential decay, while charge is an exponential growth.
When the switch is initially closed, the capacitor does not have carry any charge and Kirchoff's loop rule would result in the equation:
- R- Vc = 0
= / R