a uniform magnetic field of strength 0.5T is directed at an angle of 30degree to the plane of 100turns regular copper coil of lenght 0.04m and width 0.05mm. the diameter of the copper wire which makes up a coil is 1mm and the resistivity of copper is 0.000000017ohms meter. the magnetic field through the loop decreases to 0 in 0.3seconds. determine

1) initial coil through the coil
2) the average induced E.M.F in the coil as the field increases
3) the amount of charge that passes the coil as the field increases