A wire 88cm long bent into a circular loop is placed perpendicular to the magnetic field of density 2.5 Wb `m^(-2)`. Within 0.5 s the loop is changed into square of each side 22 cm and the density is increased to `3Wbm-2`. Calculate the value of e.m.f. induced.

A wire 40 cm long bent into a rectangular loop 15 cmxx5 cm is placed perpendicular to the magnetic field whose flux density is 0.8 Wbm ^(-2) . Within 1.0 second, the loop is changed into a 10 cm square and flux density increases to 1.4 Wbm^(-2) . Calculate the value of induced emf.

A two metre wire is moving with a velocitu of 1m//s perpendicular to a magnetic field of 0.5 Wb//m^2 . the emf induced in it will be:

A wire of length 0.1 m moves with a speed of 10 m s^-1 perpendicular to a magnetic field of induction 1 Wb m^-2 . What is the value of induced e.m.f.?

A two metre wire is moving with a velocity of 1 m/s perpendicular to a magnetic field of 0.5 Wb/m^2 . The emf induced in it will be

A circular loop of area 0.01 m^(2) carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1 T. The torque acting on the loop is

A straight line conductor of length 0.4 m is moved with a speed of 7ms^-1 perpendicular to magnetic field of intensity 0.9 Wb m^-2 . The induced e.m.f. across the conductor is