A copper ring and a wooden ring of same dimension are placed so that there is same magnetic flux through each. Is induced current or induced EMF same in each case when flux · starts varying at the same rate in both.

Show that the rate of change of magnetic flux has the same units as induced e.m.f.

A uniform copper ring is threaded by a steadily increasing magnetic field so that the magnetic flux through the ring is changing by a constant rate. Use a voltmeter to measure the voltage across the metal ring. What do you predict?

Production of induced emf in a coil due to the changes of current in the same coil is

The magnetic flux through a 50-turn coil increase at the rate of 0.05 Wb/s. What is the induced emf between the ends of the coil ?

Two rings of the same radius R and M are placed such that their centres coincide and their planes are perpendicular to each other, the moment of inertia of the system about an axis passing through the diameters of both rings is

Two identical loops , one of copper and the other of aluminium , are rotated with the same angular speed in the magnetic field . Compare (i) the induced emf and (ii) the current produced in the two coils . Justify your answer .

Current in a long current carrying wire is I=2t A conducting loop is placed to the right of this wire. Find a. magnetic flux phi_B passing through the loop. b. induced emf|e| prodced in the loop. c. if total resistance of the loop is R , then find induced current I_("in") in the loop.

A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses? (a). Both habve the same mass. (b). mass of ring is half of that of the disk (c). mass of the ring is double to that of the disk. (d). more information is needed to decide.

A: When the magnetic flux through a loop is maximum, induced emf is maximum. R: When the magnetic flux through a loop is minimum, induced emf is minimum.