An ammeter is connected in series with each of the elements resistance R, inductance L and capacitance C, to measure the current I_R, I_L, I_C respectively
Another ammeter is connected to measure the overall circuit current I
A voltmeter V is connected across the power supply for measuring the impressed voltage V, which is the same for all the elements R, L, C

The schematic circuit diagram for studying the characteristics of an a.c. RLC Parallel Circuit is shown below:
An ammeter is connected in series with each of the elements resistance R, inductance L and capacitance C, to measure the current I_R, I_L, I_C respectively Another ammeter is connected to measure the overall circuit current I A voltmeter V is connected across the power supply for measuring the impressed voltage V, which is the same for all the elements R, L, C