A horizontal straight wire of length L extending from east to west is falling with speed v at right angles to the horizontal component of Earth.s magnetic field B.
(i) Write the expression for the instantaneous value of the emf induced in the wire.
(ii) What is the direction of the emf?
(iii) Which end of the wire is at the higher potential?

A horizontal straight wire 20 m long extending from east to west falling with a speed of 5.0 m//s , at right angles to the horizontal component of the earth’s magnetic field 0.30 × 10^(–4) Wb//m^(2) . The instantaneous value of the e.m.f. induced in the wire will be

A horizontal straight wire 10 m long extending from east to west falling with a speed of 0.5 ms^(-1) at right angles to the horizontal component of the earth's magnetic field 0.30 xx 10^(-4)Wb m^(-2) (a) What is the instantaneous value of the e.m.f. induced in the wire ? (b) What is the direction value of the e.m.f. (c) Which end of the wire is at higher electric potential ?

A horizontal straight wire 10m long extending from east to west is falling with a speed of 5.0m/s at right angles to the horizontal component of earths magnetic field 0.3 xx 10^(-4) tesla. The emf induced across the ends of wire is

A 10 m long horizontal wire extends from North east ro South East. It is falling with a speed of 5.0 ms^(-1) , at right angles to the horizontal component of the earth's magnetic field, of 0.3xx10^(-4)Wb//m^(2) . The value of the induced emf in wire is :

A 10 m long horizontal wire extends from North east ro South East. It is falling with a speed of 5.0 ms^(-1) , at right angles to the horizontal component of the earth's magnetic field, of 0.3xx10^(-4)Wb//m^(2) . The value of the induced emf in wire is :

(a) Draw a labelled diagrame of an ac generator. Obtain the expression for the emf induced in the rotating coil of N turns each of cross-sectional are A, in the presence of a magnetic field overset(to) (B) . (b) A horizonatal conducting rod 10m long extending from east to west is falling with a speed 5.0 ms ^(-1) at right angles to the horizontal component of the Earth's magnetic fields. 0.3 xx 10^(-4) Wb m^(-2) . Find the instantaneous value of the emf induced in the rod .

A current canying straight wire is placed along east-west and current is passed through it eastward . The direction of the force act on it due to horizontal component of earth's magnetic field is

A vertical rod of length l is moved with constant velocity v towards east. The vertical component of earth magnetic field is B and angle of dip is theta . The induced e.m.f. in the rod is

A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is

At a perpendicular place on the earth, the horizontal component of earth's magnetic field of B, and the angle of dip is theta . A striaght meridian and is moved horizontally perpendicular to its length with a velocity v. The emf induced across the rod is