A bead moves along a straight horizontal wire of length L, starting from the left end with velocity v0. Its retardation is proportional to the distance that remains to the right end of the wire. Find the initial retardation (at left end of the wire) if the bead reaches the right end of the wire with a velocity `(v_(0))/(2)`.

A bead moves along straight horizonal wire of length L , starting from the left end with a velocity v_(0) . Its retardation is proportional to the distance from the right end of the wire. Find the initial retardation (in m//s^(2) ) (at let end of the wire) if the bead reaches the right end of the wire with a velocity (v_(0))/2 . (given v_(0)=5m//s and L=1m )

A bead moves along straight horizonal wire of length L , starting from the left end with a velocity v_(0) . Its retardation is proportional to the distance from the right end of the wire. Find the initial retardation (in m//s^(2) ) (at let end of the wire) if the bead reaches the right end of the wire with a velocity (v_(0))/2 . (given v_(0)=5m//s and L=1m )

A wire of length l tapers uniformly from end P to end Q with the diameter at P twice that at Q. A potential difference is applied across the ends of the wire. Which graph represents the variation of the drift velocity V of the conduction electrons with distance x?

A wire of length l tapers uniformly from end P to end Q with the diameter at P twice that at Q. A potential difference is applied across the ends of the wire. Which graph represents the variation of the drift velocity V of the conduction electrons with distance x?

A constant potential difference is applied between the ends of the wire. If the length of the wire is elongated 4 times, then the drift velocity of electrons will be

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

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

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?