Question

a) what are magnetic field lines ? How is the direction of magnetic field at a point in a magnetic field determined using field lines ? (b) two circular coils x and y are placed close to each other. If the current in the coil x is changed, will some current be induced in the coil y ? Give reason. (c) state flemings right hand rule.

Answer 1

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Magnetic Field Generated by Current: (a) Compasses placed near a long straight current-carrying wire indicate that field lines form circular loops centered on the wire. (b) Right hand rule 2 states that, if the right hand thumb points in the direction of the current, the fingers curl in the direction of the field.





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