A coil in the shape of an equilateral triangle of side 0.02 m is suspended plane between the pole pieces of permanent magnet producing a uniform field of $5 \times 10^{- 2}$ T. If a current of 0.1 A is passed through the coil, the couple acting is

5 \sqrt{3} \times 10^{- 7} N m

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5 \sqrt{3} \times 10^{- 10} N m

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\frac{\sqrt{3}}{5} \times 10^{- 7} N m

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3 \sqrt{5} \times 10^{- 10} N m

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Solution

The correct option is A $5 \sqrt{3} \times 10^{- 7} N m$

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A coil in the shape of an equilateral triangle of side 0.02 m is suspended plane between the pole pieces of permanent magnet producing a uniform field of 5×10−2 T. If a current of 0.1 A is passed through the coil, the couple acting is

The correct option is A 5√3×10−7Nm

A coil in the shape of an equilateral triangle of side 0.02 m is suspended plane between the pole pieces of permanent magnet producing a uniform field of $5 \times 10^{- 2}$ T. If a current of 0.1 A is passed through the coil, the couple acting is

The correct option is A $5 \sqrt{3} \times 10^{- 7} N m$