juliog
Newbie level 6

Hi guys,
I was having a look at these questions about a four-wire measurement system and I'm not sure about the answers:
A four wire system is employed to measure a resistive load, Rx. The model for each electrode Zp is the parallel combination of a resistor Rp=1MΩ and a capacitor Cp=1nF. The system is being driven by a sinusoidal current of 1.sinωt [μA]
Which is the voltage amplitude of the output signal measured at 0,1kHz,1kHz, 10kHz, 100kHz and 1MHz?
Which is the voltage amplitude at the input as a function of the frequency?
Which is the best frequency to perform the measurements? Why?
They are simple questions but I feel really confused. Isn't the voltage amplitude at the output the same for all frequencies? Why some frequencies are better than others to perfrom the measurements?
Thanks!
I was having a look at these questions about a four-wire measurement system and I'm not sure about the answers:
A four wire system is employed to measure a resistive load, Rx. The model for each electrode Zp is the parallel combination of a resistor Rp=1MΩ and a capacitor Cp=1nF. The system is being driven by a sinusoidal current of 1.sinωt [μA]
Which is the voltage amplitude of the output signal measured at 0,1kHz,1kHz, 10kHz, 100kHz and 1MHz?
Which is the voltage amplitude at the input as a function of the frequency?
Which is the best frequency to perform the measurements? Why?
They are simple questions but I feel really confused. Isn't the voltage amplitude at the output the same for all frequencies? Why some frequencies are better than others to perfrom the measurements?
Thanks!