What is the difference between the direct and alternating currents? How many times does AC used in India change direction in one second?
NCERT Class X
Science - Exemplar Problems
Chapter_SAMPLE QUESTION PAPER-I
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Answer: In case of AC; the direction of current keeps on changing at frequent intervals, while the direction of current always remains the same in case of DC. The AC in India changes its direction at the rate of 100 times in a second.
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