Electronic Principles
Which one of the following statements is true for the voltage in a parallel RL circuit?

None of these
The total voltage lags the total current by less than 90
The voltage always has the same amplitude and phase for every part of the circuit
The total voltages is less than the sum of the voltages across the resistance and inductance
The total voltage is equal to the sum of the voltages across the resistance and inductance

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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 total voltage multiplied by the total resistance
The same current flows through every part of a series circuit
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
None of these
The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit

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Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is greater than the sum of the resistance and capacitive reactance
The impedance is less than the sum of the resistance and capacitive reactance
None of these
The impedance is equal to the sum of the resistance and capacitive reactance

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Electronic Principles
One henry of inductance is defined as:

the number of turns of wire in an inductor multiplied by the amount of current flowing through it
the amount of counter emf required to reduce a current to 1 A
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
None of these
the amount of inductance required to change the frequency of a current by 1 Hz

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Electronic Principles
Which one of the following phrases most accurately describes a purely inductive circuit?

None of these
The ac voltage lags the current by 90 degree
Combinations of resistance and inductive reactance provide any opposition to current flow
Inductive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow

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