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  • 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 be

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 every1/50 second

Answers (1)

Answer: D
Solution:
Fleming’s right hand rule is used to find out direction of induced current.
Fleming’s left hand rule is used to find out force on a current carrying wire in magnetic field.
Right hand thumb rule is used to find the direction of magnetic field created by a current carrying wire.
Direct current source or DC source will cause current in same direction all the time.
Alternating-current source or AC source will cause the periodic change in direction of current.
The alternating-current coming to our houses in India has a frequency of 50 Hz.
In one cycle direction of current changes twice to become same.
We can say that the direction of current changes after every half cycle.
Therefore, time to change the direction will be half of the time period that would be 1/100 seconds.

Hence the correct option of this question is option D

 

 

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