If magnetic flux passing through a coil as a function of time is given by = (2t2 + t) Wb, then induced emf (magnitude) at t = 1 s will be ______ V

The magnetic flux linked with a coil at any instant 't' is given by ϕ = 5t3 – 100t + 300, the e.m.f. induced in the coil at t = 2 second is :-–40 V40 V140 V300 V

Two coils are placed near each other, and one is on top of the other one. The magnetic flux through thetop coil changes due to a varying current in the coil.(a) Suppose the magnetic flux through the top coil increases at a uniform rate of 0.3 Wb/s, what is theinduced emf in the bottom coil? Is it constant with time?(b) Suppose the magnetic flux through the top coil decreases at a varying rate of 0.5t Wb/s, what is theinduced emf in the bottom coil? Is it constant with time? What happens to the direction of thecurrent in the bottom coil, as compared with part a)?(c) Suppose that the current described in part a) is in the bottom coil rather than the top one. What isthe induced emf in the top coil?

An increasing magnetic field is 45.0° clockwise from the vertical axis, and increases from 0.500 T to 0.6 T in 4.30 s. There is a coil at rest whose axis is along the vertical and it has 100 turns and a diameter of 6.00 cm. What is the induced emf?

A square loop of side 10 cm and resistance 0.7Ω is placed vertically in east-west plane. A uniform magnetic field of 0.20 T is set up across the plane in north east direction. The magnetic field is decreased to zero in 1 s at a steady rate. Then, magnitude of induced emf is x√×10−3 V. The value of x is _____

A coil of area 50 centimeter square has 1000 turns and the magnetic field of 0.2 T is parallel to the coil, if the magnetic field is reduced to zero in 2 second, the induced emf in the coil is___________*1 point0 V1 V10 V5 V