Question

start from d

DISCUSS: What are the changes that you notice as a consequence of doubling the magnetic field. What are the improvements, and what are the deficits, any? Estimate the free running speed and the efficiency. 0.160 B - 4.0 T OOOOOOOOOOOO 1.5 m Calculate, and show your 80 volts work on the page. Ar Rest a) the current when the wire is at rest. b) the magnitude of the magnetic force on the wire. __ _) The direction the wire is compelled to move. When the wire is moving at 6 m/s _d) the back gay when the wire is moving at 4 m/s. Le) the current in the wire in this state, the force experienced by the wire. AT MAXIMUM FREE-RUNNING SPEED [Ar this speed there is no force on the wire, so what is the current? - the terminal velocity of the wire if there is no external force WHEN THE MOTOR IS EARNING ITS LIVING BY EXERTING A 2400 N FORCE ) the current needed to produce a force of 2400 N against a mechanical resistance. ______I) the total voltage in the circuit for this current to flow. the back voltage that has to arise. _k) the speed with of the wire if this back voltage is to arise. _ the power delivered by the battery. m) the power dissipated by the resistor. .) the rate of work is done by the wire against the 2400 N force. Lo) the efficiency of the motor in converting electrical energy to mechanical work.

Answer 1

@ Back EMA &= Bul &= 4x4x1.5 E = 24V ② Applying ahmis law I= = 80-24 e 0.16 I= 350 A & force is grem by F = BId f=4x3sox1.5 If= 2loon/ (9) when the back Emp is sov Current stops flaming and force stops acting &= Bud 80= 4xVxlis [V = 13.33 mln 7