A metallic rod held horizontally along east-west direction is allowed to fall under gravity. Will there be any e.m.f. induced across its end?

A wire in N-S direction is dropped freely. Will any potential difference be induced across its ends?

If a magnet is held stationary and a coil is moved towards the magnet, will there be any induced e.m.f. produced in the coil?

If the wire kept in E-W direction be dropped freely, then is there any potential difference induced across it ends?

If a 10 m long metallic bar moves in a direction at right angle to the magnetic field with a speed of 5.0 m s^-1 25 V e.m.f. is induced in it. Find the value of magnetic field intensity.

A satellite with a 40 cm long copper wire on its bottom is revolving around the earth at 7.8 km per second, such that the wire is perpendicular to the vertical component of earths' magnetic field. Determine the e.m.f. induced across this wire, if the magnitude of the vertical component of magnetic field is 0.2 gauss.

A copper ring is held horizontally and a bar magnetic is dropped through the ring with its length along the axis of the ring (shown in the figure) will the acceleration of the falling magnet be equal to , greater than or less than that due to gravity?

Direction. In the following questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : When a bar magnet falls freely along the axis of a solenoid held vertically, its acceleration is less than the acceleration due to gravity Reason: The falling magnet induces current in the solenoid and according to Lenz's law, the induced current opposes the falling motion of the magnet

A metallic ring of mass m and radius l (ring being horizontal) is falling under gravity in a region having a magnetic field. If z is the vertical directoin, the z-component of magnitude field is B_z = B_0(1+lambda+lambdaz) . If R is the resistance of the ring and if the ring falls with a velocity v, find the energy lost in the resistacne. If the ring has reached a constant velocity, use the conversation of energy to determine v in terms of m, B, lambda and acceleration due to gravity g.

Two parallel vertical metallic rails AB and CD are separated by 1m. They are connected at the two ends by resistances R_1 and R_2 as shown in the figure. A horizontal metallic bar 1 of mass 0.2 kg slides without friction, vertically down the rails under the action of gravity. There is a uniform horizontal magnetic field of 0.6 T perpendicular to the plane of the rails. It is observed that when the terminal velocity is attained, the powers dissipated in R_1 and R_2 are 0.76W and 1.2W respectively (g=9.8m//s^2) The value of R_2 is

A copper rod of length 0.18 m is moving with a uniform velocity 10 ms^-1 parallel to a long straight wire carrying a current of 5.0 A. The rod itself is perpendicular to the wire with its ends at distances 0.01 m and 0.2 m from it. Calculate the e.m.f. induced in the rod.