A conductor suspended by two flexible wires as shown in the figure below has a m

Question

A conductor suspended by two flexible wires as shown in the figure below has a mass per unit length of 0.0424 kg/m. What current must exist in the conductor for the tension in the supporting wires to be zero when the magnetic field is 3.58 T into the page? What is the required direction for the current? (We are looking for the direction of the current in the conductor.) to the left to the right The magnitude is zero.

Explanation / Answer

for 0 tension in the wire magnetic force in the conductor = gravitational force on it i.e. i*lxB=m*g =>i=m*g/lxB =>i=0.0424*9.8/3.58=0.1160A the direction of current should be towards right in the conductor..

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