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Which of these statements is correct. For a resistor
The voltage leads the current by 90 degrees
The voltage lags the current by 90 degrees
The voltage leads the current by 180 degrees
The voltage and current are in phase
Which of these statements is correct. For an inductor:
The voltage leads the current by 90 degrees
The current leads the voltage by 90 degrees
The voltage leads the current by 180 degrees
The voltage and current are in phase
Which of these statements is correct. For a capacitor
The voltage leads the current by 90 degrees
The current leads the voltage by 90 degrees
The voltage leads the current by 180 degrees
The voltage and current are in phase
Which is the best definition? In an AC circuit reactance is the opposition to current by:
a resistor
a capacitor only
an inductor only
a capacitor or an inductor
What is the reactance of a capacitor with a value of 200pF at a frequency of 3.5 MHz?
4368.23 Ohms
12.24 ohms
227.38 Ohms
3.5 Ohms
What is the reactance of an inductor with a value of 30uH at a frequency of 145MHz
35 k Ohms
30.23 Ohms
27.33 k Ohms
36.59 Ohms
Impedance is always a combination of:
capacative reactance and inductive reactance
resistance and capacative reactance
reistance and inductive reactance
resistance and reactance
What is the symbol used to represent impedance?
I
R
Z
Im
Which of these is the impedance of 10 Ohm resistor in series with a 20Ohm reactance?