Electronic Principles
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

50 Ohm
60 Ohm
10 Ohm
100 Ohm or more
None of these

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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
Resistances provide the only opposition to current flow
Inductive reactance provides the only opposition to current flow
Combinations of resistance and inductive reactance provide any opposition to current flow

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Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

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

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