A copper ring is tied to a string and suspended vertically. On bringing a magnet towards the coil, as shown in the figure-

A magnet is moved towards the coil

A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction vecB as shown in the figure At the position PQR, the speed of the ring is v. Then, the potential difference developed across the ring is

A magnet is suspended vertically from a fixed point by means of a spring, as shown in the figure. One end of the magnet hangs inside a coil of wire. The coil is connected in series with a resistance R. The magnet is displaced vertically a small distance D and the released. shown in the figure variation with time t of the vertical displacement d of the magnet from its equilibrium position. State and explain, by reference to electromagnetic induction, the nature of the oscillations of the magnet. Calculate the angular frequency omega_0 of the oscillations.

A toy car ( made of soft iron ) and two bar magnets are arranged as shown in the figure. What would happen if the magnet 'A' is moved towards the car as shown in the figure. ?

Magnetic field induction at the centre of a circular coil shown in the figure is

A copper ring is suspended by a thread. One end of a magnet is brought horizontally towards the ring. How. Will it affect the position of the ring?

Predict the polarity of the plate A of the capacitor, when a magnet is moved towards it, as shown in the figure.

A copper ring is suspended in a vertical plane by a thread. A stell bar is passed through the ring in a horizontal direction and then a magnet is passed through it moving along the axis of ring. Will the motion of the bar and the magnet affect the position of the ring?