A coil having an area 2 m^(2) is placed in a magnetic field which changes from 1 Wb m^(2)" to "4 Wb m^(2) in an interval of 2 s. The induced emf in the coil will be

A coil having an area 2 m^(2) is placed in a magnetic field which chan

1.	A coil having an area 2 m^(2) is placed in a magnetic field which changes from 1 Wb m^(2)" to "4 Wb m^(2) in an interval of 2 s. The induced emf in the coil will be
Answer» 4V 3V 1.5 V 2V Solution :Here `phi_(1)=B_(1)A=1 xx 2 =2WB, phi_(2)=B_(2)A =4 xx 2=8" Wb and t=2s"` `\|EPSI\|=(phi_(2)-phi_(1))/t=(8-2)/2=3V`

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A coil having an area 2 m^(2) is placed in a magnetic field which changes from 1 Wb m^(2)" to "4 Wb m^(2) in an interval of 2 s. The induced emf in the coil will be

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