Questions
A straight piece of conducting wire with mass M and length L is placed on a friction less incline tilted at an angle from the horizontal (as shown in figure). There is a uniform, vertical magnetic field at all points (produced by an arrangement of magnets not shown in figure). To keep the wire from sliding down the incline, a voltage source is attached to the ends of the wire. When just the right amount of current flows through the wire, the wire remains at rest.Determine the magnitude and direction of the current in the wire that will cause the wire to remain at rest.
detailed solution
Correct option is C
Fcosθ=MgsinθIBLcosθ=Mgsinθ⇒I=MgtanθLBTalk to our academic expert!
Similar Questions
Two horizontal parallel straight conductors, each 20 cm long, are arranged one vertically above the other and carry equal currents in opposite directions. The lower conductor is fixed while the other is free to move in guides remaining parallel to the lower. If the upper conductor weighs 1.0 g, what is the approximate current (in A) that will maintain the conductors at a distance 0.50 cm apart?
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