a copper wire of length 25 cm is in a magnetic field of 0.20T. If it has mass of

Question

a copper wire of length 25 cm is in a magnetic field of 0.20T. If it has mass of 10g, what is the mimimun current through thewire that would cause a magnetic force equal to its weight? a horizontal wire of length 3.0 m carries a current of 6.0 Aand is oriented so that the current direction is 50o Sof W. The Earth's magnetic field is due north at this point and hasa strength of 0.14e-4 T. What is the magnitude of the force on thewire? a circular loop carrying a current of 1.0 A is oriented in amagnetic field of 0.35T. the loop has an area of 0.24 m2and is mounted on a axis, perpendicular to the magnetic field,which allows the loop to rotate. i plane of the loop is orientedparallel to the field, what torque is created by the interaction ofthe loops current and the field? a copper wire of length 25 cm is in a magnetic field of 0.20T. If it has mass of 10g, what is the mimimun current through thewire that would cause a magnetic force equal to its weight? a horizontal wire of length 3.0 m carries a current of 6.0 Aand is oriented so that the current direction is 50o Sof W. The Earth's magnetic field is due north at this point and hasa strength of 0.14e-4 T. What is the magnitude of the force on thewire? a circular loop carrying a current of 1.0 A is oriented in amagnetic field of 0.35T. the loop has an area of 0.24 m2and is mounted on a axis, perpendicular to the magnetic field,which allows the loop to rotate. i plane of the loop is orientedparallel to the field, what torque is created by the interaction ofthe loops current and the field?

Explanation / Answer

L = 25 cm, B = 0.20 T, m = 10 g, find I F = mg = IBL I = mg/(BL) = 1.95 A L = 3.0 m, I = 6.0 A, = 50o, B = 0.14e-4 T F = IBLsin(90 + ) = 2.43e-4 N I = 1.0 A, B = 0.26 T, A = 0.24 m2 torque = IA*B = 0.0624 N-m

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