28. Magnetic Fields and Forces

Magnetic Force on Current-Carrying Wire

Magnetic force on a current carrying wire | Physics | Khan Academy

Anderson Video - Force on a Wire in a Magnetic Field

<p>A 5-m current-carrying wire (red line) is ran through a 4 T magnetic field (blue lines), as shown. The angle shown is 30°. What must the magnitude and direction of the current in the wire be when it feels a 3 N force directed into the page?</p><p><img src="https://static.studychannel-prd.pearsonprd.tech/courses/physics/thumbnails/images/49050c26"alt=""/></p>

Force on a Current Carrying Wire in a Magnetic field

Magnetic Force on a Current Carrying Wire

Find Force on Current-Carrying Wire at an Angle

 Suppose a certain type of wire has a length of <math display=“inline”><mrow><mrow><mn>25</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></mrow></math> and a mass of <math display=“inline”><mrow><mn>1</mn><mo>.</mo><mrow><mn>2</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">g</mi></mrow><mo>.</mo></mrow></math> At a point where earth’s magnetic field is parallel to its surface, how much current would have to flow in this wire for the magnetic force on it to equal its weight? 

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