Question

The effective length of bar magnet is equal to _______

Answer 1

Hey mate here is your answer
The effective length of bar magnet is twice the length of magnet.

Hope it helps you
Thank you

Answer 2

Heyaa Friend !

Effective Length of a Bar Magnet is taken to be 85 percent of it's Geometrical Length.

For Your Further Knowledge

Geometrical Length of bar magnet is L , then speration between two poles is nearly equal to 6/7 L .

Magnetic length : distance between two poles

Geometrical length of bar magnet : actual or original length of bar magnet.

Geometrical length is always greater than magnetic length. Magnetic length approximately 0.83 times to 0.85 times of Geometric length

Hope it Helpz

Naz:):)