Electronic Principles
Current is

The force that causes electrons to flow
The number of free electrons in an atom
None of these
An imbalance of electrical charges
The flow of charged particles through a material

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

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

dissipating 1 W of power
changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
storing 1 V for 1 second
None of these
causing an ac phase shift greater than 90 degree

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