Choose the incorrect statement:

Options

A. (a) Fleming's right-hand rule is a simple rule to know the diretion of induced current.
B. (b) The right-hand thumb rule is used to find the direction of magnetic fields due to current carrying conductors.
C. (c) The difference between the direct and alternating currents is that the direct current always flows in one direction, whereas the alternating current reverse its direction periodically.
D. (d) In india, the AC changes direction after every `(1//50)` second.

Answer

D

Explanation

The frequency of AC in india is `50Hz`. Thus, time taken to complete `1 cycl e=(1//50)s`. Since direction of AC changes twice in a cycle, change in direction takes place after every `1/2(1//50)s=(1//100)s`.