A conducting wire ab of length l, resistance r and mass m starts sliding at t = 0 down a smooth,...

A conducting wire ab of length l resistance r and mass m starts sliding down at t=0 on a smooth, vertical thick pair of connected rails as shown. The terminal speed of the wire is

A conducting wire of length l and mass m can slide without friction on two parallel rails and is connected to capacitance C . The whole system lies in amagnetic field B and a constant force F is applied to the rod . Then

In the circuit shown in figure. AB is a uniform wire of length L and resistance R. P is a sliding contact. Take the ratio of lengths PB to AB as alpha . (a) Find the ratio (V_(0))/(V) in terms of R_(0),R and alpha (b) Predict the value of (V_(0))/(V) when R_(0) rar infty . Use the result obtained in (a) to show that your prediction is correct. (c) Find the ratio (V_(0))/(V) when R_(0) = 2R and alpha = (1)/(2)

Figure showns a smooth pair of thick metallic rails connected across a battery of emf epsilon having a negligible internal resistance.A wire ab of length l and resistance r can slide smoothly on the rails.The entire system lies in a horizontal plane and is immersed in a uniform vertical magnetic field B .At an instant t the wire at this instant. (b)What is the force acting on the wire at this instant. (c)Show that after some time the wire ab will slide with a constant velocity.Find this velocity.

A wire ab of length l, mass m and resistance R slides on a smooth thick pair of metallic rails joined at the bottom as shown in fig. The plane of the rails makes an angle theta with the horizontal. A vertical magnetic field B exist in the region. If the wire slides on the rails at a constant speed v, then the value of B is -