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There are 2 long parallel conductors AB and CD. AB carries 4A current and CD carries 3A current. The magnetic field at the midpoint of these 2 conductors is B. If 4A current is switched off, then what is the magnetic field at the midpoint now?

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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.


There are 2 long parallel conductors AB and CD. AB carries 4A current and CD carries 3A current. The magnetic field at the midpoint of these 2 conductors is B. If 4A current is switched off, then what is the magnetic field at the midpoint now?






 
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