Two magnetic poles of the same length attract each other with a force of $2$ N when placed on the two corners of an equilateral triangle. If a south pole of the same strength is placed at the third vertex, it experiences a force of magnitude.

4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $2$ N
As the magnetic poles A and B attract each other, so they are of opposite polarity, when a third pole of same strength is placed at C then it experiences a force as shown in the figure.
The net force acting on C is
$F_{1} = \sqrt{F_{1}^{2} + F_{2}^{2} + 2 F_{1} F_{2} cos 120^{o}}$
$= \sqrt{2^{2} + 2^{2} + 2 \times 2 \times 2 (- \frac{1}{2})} = 2$ N.

Suggest Corrections

Similar questions

Two poles of same strength attract each other with a force of magnitude $F$ when placed at the corners of an equilateral triangle. If a north pole of the same strength is placed at the third vertex, it experiences a force of magnitude

A South pole and North pole of each strength ‘m’ are placed at the two corners of an equilateral triangle of side ‘a’. The resultant magnetic induction field strength at the third vertex is :

Two equal poles repel each other with a force of 10 $^{- 3}$ N. When placed 2cm apart in air, the pole strength of each is (in amp-m).

Two north poles each of pole strength m and a south pole of pole strength m are placed at the three corners of an equilateral triangle of side a. The intensity of magnetic induction field strength at the centroid of the triangle is :

Q. When a bar magnet of magnetic moment

40 A m^{2}

is placed in a magnetic field of induction

40 \times 10^{- 8}

T, each pole experiences a force of

2 \times 10^{- 5}

N. The distance between the two poles of the magnet is:

Join BYJU'S Learning Program

Two magnetic poles of the same length attract each other with a force of 2N when placed on the two corners of an equilateral triangle. If a south pole of the same strength is placed at the third vertex, it experiences a force of magnitude.

The correct option is B 2NAs the magnetic poles A and B attract each other, so they are of opposite polarity, when a third pole of same strength is placed at C then it experiences a force as shown in the figure.The net force acting on C isF1=√F21+F22+2F1F2cos120o=√22+22+2×2×2(−12)=2N.

Two magnetic poles of the same length attract each other with a force of $2$ N when placed on the two corners of an equilateral triangle. If a south pole of the same strength is placed at the third vertex, it experiences a force of magnitude.