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(Solved): a railgun is a device that uses the magnetic force on electric currents to launch projectiles at hig ...



a railgun is a device that uses the magnetic force on electric currents to launch projectiles at high speeds. the railgun shown in the figure has a 6V power supply connected to two conducting rails. a 12 cm long piece of copper wire with a mass of 38 grams, and a resistence of .88m slides freely on the rails in a uniform magnetic field of .95 T. the resistence of the rails is negligible. 


what is the direction of the force on the wire ? ( show a figure with the directions of I, B and F)

if the wire starts from rest, through what distance must the force be applied to it so that it reaches a velocity of 28 m/s? (show the steps of algebra and the equation)


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a) Magnetic force acts on the conductor in the opposite direction of velocity. i e., Towards left. Magnetic force acts towards left. b) Fm=Bil Fm is t
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