Two short bar magnets oflength $1\ cm$ each have magnetic moments $1.20\ Am^2$ and $1.00\ Am^2$ respectively. They are placed on a horizontal table parallel to each other with their $N$ poles pointing towards the South. They have a common magnetic equator and are separated by a distance of $20.0\ cm$. The value of the resultand horizontal magnetic induction at the mid-point $O$ of the line joining their centres is close to (Horizontal component of earth.s magnetic induction is $3.6 \times 10^{-5}$ $Wbm^{-2}$ )
Two short bar magnets oflength $1\ cm$ each have magnetic moments $1.20\ Am^2$ and $1.00\ Am^2$ respectively. They are placed on a horizontal table parallel to each other with their $N$ poles pointing towards the South. They have a common magnetic equator and are separated by a distance of $20.0\ cm$. The value of the resultand horizontal magnetic induction at the mid-point $O$ of the line joining their centres is close to (Horizontal component of earth.s magnetic induction is $3.6 \times 10^{-5}$ $Wbm^{-2}$ )
- [JEE MAIN 2013]
- A
$3.6 \times 10^{-5} $ $Wbm^{-2}$
- B
$2.56 \times 10^{-4}$ $ Wbm^{-2}$
- C
$3.50 \times 10^{-4} $ $Wbm^{-2}$
- D
$5.80 \times 10^{-4}$ $Wbm^{-2}$
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