Question

Rohan made four electromagnets A, B, C, and D with 20, 40, 60 and 80
turns. He connected them one by one to a battery of two cells and brought
them near a box of all-pins. Which electromagnet will attract the maximum
pins and why?
grade 7 cbse

P.S dont answer the question if you dont know or even type [ answer :-

i dont know]

Answer 1

d will attract more as the charge of attraction will be more

Answer 2

d electomagnet in maximum trun so generate highly magnetic field so atarct maximum pin