Q. A planar coil having12 turns carries 15A cur

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​​Q. A planar coil having12 turns carries 15A current. The coil is oriented with respect to the uniform magetic field B =0.2 i^ T. such that its directed area is A = -0.04 i^ m2. The potential energy of the coil in the given orientation is what ?

deepak · Accepted Answer

as you know a coil in a magnetic field only experiences torque, and = X where T is torque , M is magnetic dipole moment and B is magnectic field we know that = NI where N is the no of turns i is the current and A is the areal vector=12x15x(-0.04 ) also =0.2 now consider , = X => T=MBsin we know that workdone by torque, W.D = W.D = therefore W.D=− MB cosW.D= −. substituting the value of M and B W.D = P.E = +12x15x0.2x0.004 = 0.144 J hope this was usefull XD

Magnetism> Q. A planar coil having12 turns carries...

Q. A planar coil having12 turns carries 15A current. The coil is oriented with respect to the uniform magetic field B =0.2 i^{^} T. such that its directed area is A = -0.04 i^{^} m². The potential energy of the coil in the given orientation is what ?

Naina Singh , 8 Years ago

deepak

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Magnetism> ​​Q. A planar coil having12 turns carries...

​​Q. A planar coil having12 turns carries 15A current. The coil is oriented with respect to the uniform magetic field B =0.2 i^ T. such that its directed area is A = -0.04 i^ m2. The potential energy of the coil in the given orientation is what ?

Naina Singh , 8 Years ago

deepak

LIVE ONLINE CLASSES

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Magnetism> Q. A planar coil having12 turns carries...

Q. A planar coil having12 turns carries 15A current. The coil is oriented with respect to the uniform magetic field B =0.2 i^{^} T. such that its directed area is A = -0.04 i^{^} m². The potential energy of the coil in the given orientation is what ?