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Two concentric coils of 20 turns each are situated in the same plane. Their radii are 60 cm and 80 cm and they carry currents 0.4 A and 0.5 A respectively in opposite directions. Calculate the magnetic field at the center.

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MCQs on magnetic force, magnetic field motion, electric and magnetic field motion, biot savart law, amperes circuital law, solenoid and toroid, two parallel currents forces, moving coil galvanometer, current loop and magnetic dipole torque.


Two concentric coils of 20 turns each are situated in the same plane. Their radii are 60 cm and 80 cm and they carry currents 0.4 A and 0.5 A respectively in opposite directions. Calculate the magnetic field at the center.






 
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