Question

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

Answer 1

The answer is (d) In India, the AC changes direction after every 1/50 second

• AC frequency in India is 50 Hz. 
• The direction changes twice in each cycle so that change of direction takes place after every 1/00 second