What is the difference between the direct and alternating currents? How many times does AC used in India change direction in one second?

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Solution

In case of AC; the direction of current keeps on changing at fixed intervals or periodically, 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, which is equal to 50 Hz and in each cycle it alters direction twice, hence 100 times a second.

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What is the difference between a direct current and an alternating current? How many times does AC used in India change direction in one second?

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Q. Question 8
Choose the incorrect statement:
(a) Fleming’s right-hand rule is a simple rule to know the direction of induced current
(b) The right-hand thumb rule is used to find the direction of magnetic fields due to current carrying conductors
(c) The difference between the direct and alternating currents is that the direct current always flows in one direction, whereas the alternating current reverses its direction periodically
(d) In India, the AC changes direction after every 1/ 50 second

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