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Two short bar magnets of length 1 {~cm} each have magnetic mom

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Two short bar magnets of length $1 cm$ 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 resultant horizontal magnetic induction at the mid-point $O$ of the line joining their centres is close to (Horizontal component of the earth's magnetic induction is $3.6 \times 1 0^{- 5} Wb / m^{2}$ )
(a) $3.6 \times 1 0^{- 5} Wb / m^{2}$
(b) $2.56 \times 1 0^{- 4} Wb / m^{2}$
(c) $3.50 \times 1 0^{- 4} Wb / m^{2}$
(d) $5.80 \times 1 0^{- 4} Wb / m^{2}$

Views: 6,462 students

Updated on: Jan 9, 2023

Book:

Arihant Physics JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam:

JEE Mains 2013

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William Discussed

Two short bar magnets of length

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 resultant horizontal magnetic induction at the mid-point

O

of the line joining their centres is close to (Horizontal component of the earth's magnetic induction is

3.6 \times 1 0^{- 5} Wb / m^{2}

)
(a)

3.6 \times 1 0^{- 5} Wb / m^{2}

(b)

2.56 \times 1 0^{- 4} Wb / m^{2}

(c)

3.50 \times 1 0^{- 4} Wb / m^{2}

(d)

5.80 \times 1 0^{- 4} Wb / m^{2}

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Question Text	Two short bar magnets of length $1 cm$ 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 resultant horizontal magnetic induction at the mid-point $O$ of the line joining their centres is close to (Horizontal component of the earth's magnetic induction is $3.6 \times 1 0^{- 5} Wb / m^{2}$ ) (a) $3.6 \times 1 0^{- 5} Wb / m^{2}$ (b) $2.56 \times 1 0^{- 4} Wb / m^{2}$ (c) $3.50 \times 1 0^{- 4} Wb / m^{2}$ (d) $5.80 \times 1 0^{- 4} Wb / m^{2}$
Updated On	Jan 9, 2023
Topic	Magnetism and Matter
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 3
Upvotes	455
Avg. Video Duration	7 min

Text solutionVerified

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