BasicB-005-002-011
Which term describes the direction of current in a DC circuit?
B
Answer
Transmitters, receivers, and measurements
Type
A
Directivity
B
Polarity
C
Polarization
D
Phase
Answer Notes
In a direct current (DC) circuit, current flows in one consistent direction, determined by the positive and negative terminals of the power source. The term that dictates this orientation of positive and negative is 'polarity.'
It is important not to confuse electrical polarity with other similar-sounding terms. 'Polarization' usually refers to the physical orientation of electromagnetic radio waves emitted by an antenna. 'Phase' applies to the timing of alternating current (AC) waveforms, and 'Directivity' is a measure of how an antenna focuses its signal.
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What term describes the rate at which electrical energy is used?