28. Magnetic Fields and Forces

Force and Torque on Current Loops

Torque acting on current loops | Moving charges & magnetism | Physics | Khan Academy

Magnetic Torque | Physics with Professor Matt Anderson | M23-08

Anderson Video - Magnetic Torque

Torque on a Loop at an Angle

 A single circular loop of wire has a radius of <math display=“inline”><mrow><mn>2</mn><mo>.</mo><mrow><mn>0</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></mrow></math>, and carries a current of <math display=“inline”><mrow><mn>4</mn><mo>.</mo><mn>0</mn><mtext>&#x00A0;</mtext><mtext>A</mtext></mrow></math>. What is the maximum torque that could be experienced by this loop due to earth’s magnetic field?  

Anderson Video - Force on a Wire in a Magnetic Field

 A square loop of wire has a side length of <math display=“inline”><mrow><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">&#x00A0;cm</mi></mrow></mrow></math> and carries a <math display=“inline”><mrow><mn>10</mn><mtext>&#x00A0;</mtext><mtext>A</mtext></mrow></math> current. What is the size of its magnetic dipole moment? 

Torque on a Current Loop In a Magnetic Field & Magnetic Dipole Moment - Physics

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