Electronic Principles
Doubling the number of turns of wire in an inductor:

reduces the value of inductance by one-half
None of these
multiplies the value of inductance by two
reduces the value of inductance by one-fourth
multiplies the value of inductance by four

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Electronic Principles
Which one of the following is a statement of Kirchhoffs current law?

The total current in a parallel circuit is less than the value of the smallest current
The current through a resistance is proportional to the value of resistance and the IR drop across it
The algebraic sum of currents entering and leaving a point is equal to zero
None of these
The algebraic sum of currents in a loop is equal to zero

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

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

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