It is conventional to take the current flow as the movement of .
A. negative charges
B. positive charges
C. any charge
D. protons
Electric current is the time rate of charge, measured in .
A. watts
B. volts
C. joules
D. amperes
The energy required to move a unit charge through an element is .
A. . current
B. . power
C. . voltage
D. . potential
The plus (+) and minus (-) signs in an electric circuit diagram are used to define .
A. . voltage polarity
B. . current direction
C. . power flow
D. . absorbed power
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