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Q. |
The frequency of direct current is . |
A. | Zero |
B. | 50 HZ |
C. | 60 HZ |
D. | 100 HZ |
Answer» A. Zero | |
Explanation: Direct Current (DC) refers to power systems that use only one polarity of voltage or current, and to refer to the constant, zero-frequency, or slowly varying local mean value of a voltage or current. |
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