Electronic Principles
Which one of the following statements regarding ac circuits is correct?

None of these
Current and voltages are in phase through a resistor
All of these
Current leads the voltage through a resistor
Current lags the voltage through a resistor

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Electronic Principles
Which one of the following statements is true for current flowing in a series circuit?

The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
The same current flows through every part of a series circuit
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
None of these
The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it

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Electronic Principles
The total impedance of a parallel RLC circuit:

is maximum at the resonant frequency
always increases as the applied frequency increases
None of these
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
always decreases as the applied frequency increases

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