In the arrangement shown below two different copper coils A and B have been inserted over a 3non - conducting hollow cylinder.(1) Wul the galvanometer (G) show any deflection when a constant current flows in coil A(ii) Will the galvanometer show any deflection when current in coil A is changed with thehelp of rheostat?(iii) Will there be any change in deflection if the current in the coil A is changed at a fasterrate? Explain your observation in each case.
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1) When steady current flows in A then the magnetic flux produced and got linked with the second coil B remains constant
So no induction is possible in the second coil. Hence no deflection in galvanometer
2) If we change the current in the coil A by rheostat then flux lined also changes with B which induces current in B and so deflection
3) as fast change in current would also change the magnetic flux so rapidly. The induced current is proportional to the rate of change of flux and so greater deflection is produced
Explanation:
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