A straight wire AB of mass 40 g and length 50 cm is suspended by a pair of flexible leads in uniform magnetic field of magnitude 0.40 T as shown in the figure. The magnitude of the current required in the wire to remove the tension in the supporting leads is_____A. (Take g = 10 m s -2 ).
Text Solution
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(2)
The formula to calculate the magnetic force on the conductor is given by
F B = ILB ...
line formula to calculate the gravitational force on the conductor is given by
F G = mg ...
Equate both the equations and simplify to obtain the required current through the conductor. ILB = mg
…
Substitute the values of the known parameters into equation to calculate the required current through the conductor.
=2 A
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