A coil having an area `2m^(2)` is placed in a magnetic field which changes from `1 Wb//m^(2)` to `4Wb//m^(2)` in an interval of `2` second. The average 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

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 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

Area of a coil is 0.16m^2 . If the magnetic field through it changes from 0.1 Wb//m^2 to 0.5 Wb//m^2 in 0.02s, then the emf induced in the coil will be-

A coil of circular cross - section having 1000 turns and 4cm^(2) face area is placed with its axis parallel to a magnetic field which decreases by 10^(-2)"Wb m"^(-2) in 0.01 s. the e.m.f induced in the coil is :