Question

A bar magnet having centre O has a length of 4 cm. Point P₁ is in the broad side-on and P₂ is in the end side-on position with OP₁ = OP₂ = 10 metres. The ratio of magnetic intensities H at P₁ and P₂ is

• A. $H _ { 1 } : H _ { 2 } = 16 : 100$
• B. $H _ { 1 } : H _ { 2 } = 1 : 2$
• C. $H _ { 1 } : H _ { 2 } = 2 : 1$
• D. $H _ { 1 } : H _ { 2 } = 100 : 16$

Answer 1

Answer: (B)

$H _ { 1 } : H _ { 2 } = 1 : 2$

Answer 2

Magnetic intensity on end side-on position is twice than broad side on position.