The magnetic flux passing normally through a coil is ø = 20 cos πt + t2 + 50 + 25m Wb What will be the induced emf at t = 1s?
A copper rod moves parallel to the horizontal direction. The induced emf developed across its ends due earth’s magnetic field will be maximum at the
The magnetic flux through a surface varies with time as follows:
= 12t2 + 7t + 3
here, is in milliweber and t is in seconds.
What will be the induced emf at t = 5s?
In Faraday’s experiment if the magnet is moved towards the coil, it results in ____________ in magnetic field B at any point on the wire loop. The _________ shows deflection. Thus emf is induced by changing B.
What is the value of induced e.m.f if a wire is moved between the gap of two poles of a magnetin in 1 s and magnetic flux between the poles is 6 x 10-3 Wb?
Two similar circular co-axial loops carry equal current in the same direction. If the loops be brought nearer, the currents in them will
When a wire loop is rotated in a magnetic field, the direction of induced emf changes once in each
The induced e.m.f in a coil is given by ε = 100sin 100π volts. Calculate the number of rotations the coil makes per second.
The motional emf produced across a wire moving through a magnetic field does not depend on its:
If we keep two similar loops made up of copper and constantan in a magnetic field for same amount of time, in which loop the induced e.m.f will be greater.