The magnetic flux through a loop of resistance R=0.2Omega is varying according to the relation phi = 6t^(2) +7t +1 , where phi is in milliwebers and t is in second. What is the magnitude of emf induced in the loop at t = 2 s? What is the magnitude of current?

The magnetic flux through a coil changes from 12 mWb to 6 mWb in 0.01 s. What is the induced emf?

The magnetic flux through a coil of 50 turns changes from 0.3wb per turn to zero in 1sec. Calculate the emf induced across the two ends of the coils.

The refractive index of water w.r.t. air is 1.3 and that of glass is 1.5. Calculate the refractive index of water w.r.t. glass.

The displacement ( in meter ) of a particle moving along x-axis is given by x = 18t+ 5t^2 . Calculate instantaneous velocity at t = 2s

A closed circular coil of 200 turns each of mean radius 50 cm and having a total resistance of 10Omega is placed with its plane at right angles to a magnetic field of strength 0.01 T. Calculate the amount of charge passing through it when the coil is turned through 180^@ about the axis in its plane.

When a coil of area 5m^(2) and number of turns 100 is placed perpendicular to a magnetic field of 10T, the flux passing through it is 5xx10Wb . If the coil is removed from the field in 0.1s, calculate the induced emf.

A wire of length l is used to form a rectangle of sides 40 cm and 10 cm. The coil is placed in a uniform magnetic field of flux density 0.2 T in such a way that flux lines are perpendicular to the plane of the coil. The rectangle is changed to a square in 0.3s. Find induced emf developed in the coil.

The displacement ( in meter ) of a particle moving along x-axis is given by x =18t+ 5t^2 . Calculate average velocity between t = 2s and t = 3s .

The decomposition of hydrocarbon follows the equation k = (4.5xx10^11 s^-1) e^(-28000 K//T) Calculate E_a .