A Coil of Radius R = 5 Cm Lies Inside $\theta$

question 58

Multiple Choice

A coil of radius R = 5 cm lies inside a long solenoid which carries a current I₁ = 10 A and has 800 turns/m.The coil carries a current I₂ = 4 A and the normal of the plane of the coil is at an angle $\theta$ = 30 ^$\circ$ with the axis of the solenoid.The magnitude of the torque on the coil is

• A)1.56 \(\times\) 10^-4 N . m
• B)2.74 \(\times\) 10^-4 N . m
• C)5.03 \(\times\) 10^-5 N . m
• D)3.16 \(\times\) 10^-4 N . m
• E)none of the above

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