Observe the diagrams and answer the questions:

i. Which effect of electric current is shown in the above figure?
ii. What will happen if the number of electric cells is increased on the magnetic needle?
iii. If the distance between the conductor and magnetic needle is increased, what will be the effect on intensity of magnetic field?
iv. If the ends of electric cell are interchanged, what will be the effect of the magnetle needle?
v. Write the names of any two instruments which work on magnetic effect of electric current,