Electronic Principles
Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?

None of these
P = I2R
P = E2/R
P = IE
I = P/E

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

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
The total current in a parallel circuit is always less than the smallest amount of current
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
None of these
The same current always flows through every part of a parallel circuit

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in one direction at a steady level
None of these
The current in an ac circuit flows in two directions at the same time

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