e/m" is maximum for "

The charge/mass (e/m) ratio is maximum for

Assertion : We use a thick wire in the secondary of a step down transformer to reduce the production heat . Reason : When the plane of the armature is parallel to the lines of force of magnetic field , the magnitude of induced e.m.f. is maximum .

At which position of the rotating coil in the magnetic field, the induced e.m.f. is maximum?

A rectangular coil rotates about an axis normal to the magnetic field, If E_(m) is the maximum value of the induced emf, then the instantaneous emf when plane of the coil makes an angle of 45^(@) with the magnetic field is

A rectangular coil rotates about an axis normal to the magnetic field, If E_(m) is the maximum value of the induced emf, then the instantaneous emf when plane of the coil makes an angle of 45^(@) with the magnetic field is

An alternating e.m.f. is given by e = 100 sin 314 t, the time within which the e.m.f. will half of its maximum value is

In an e.m. wave the electric and magnetic fields are 200V//m and 0.365A//m . The maximum rate of energy flow is