Question

Two coils of insulated copper wire are wound over a non conducting cylinder as shown in the diagram.
Coil 1 has larger number of turns.
Please answer the questions in the attached picture as soon as possible.

Answer 1

when k is closed current will flow...when k is opened there is no current..
when the current is continuously passsed through coil 1, coil 2 is repelled
faraday first and second law are responsible
lenzs law is used to determine direction od induced current

Answer 2

(i) (a) A momentary deflection is shown by the galvanometer.  

(b) A momentary deflection is shown by the galvanometer but in the opposite direction.

(ii) When key is closed or opened, the current in the coil I changes, therefore the magnetic field linked with coil II changes and hence a current is induced in it.  

(iii) Electromagnetic induction - The process by which a changing magnetic field in a conductor induces current in another conductor.  

(iv) Primary coil — coil I  

Secondary coil — coil II  

(v) Fleming's Right Hand Rule : Stretch the first three fingers of the right hand mutually perpendicular to each other such that the forefinger gives the direction of magnetic field and the thumb points in the direction of the motion of a conductor then, the middle finger will give the direction of the induced current.

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