A coil having an area `2 m^(2)` is placed in a magnetic field which changes from `1 wb//m_(2)` n interval of 2s. The e.m.f. induced in the coil is:

A coil having an area 2m^2 is placed in a magnetic field which changes from 1wb//m^2 to 4wb//m^2 in an interval of 2 second. The e.m.f. induced in the coil will be

A coil having an area A_(0) is placed in a magnetic field which changes from B_(0) to 4B_(0) in a time interval t . The e.m.f. induced in the coil will be

A coil having an area of 2m^(2) is placed in a magnetic field which changes from 2 Wb//m^(2) to 5Wb//m^(2) in 3 seconds. The e.m.f. Induced in the coil is

A coil having an area of 3m^(2) is placed in a magnetic field which changes from a 9 Wb//m^(2) to 5Wb//m^(2) in three seconds. The e.m.f. Induced in the coil is