30. Induction and Inductance

Lenz's Law

Lenz's Law | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan Academy

<img src="https://media.pearsoncmg.com/aw/aw_knight_physics_5/msa/content/practice-test/img/EX30_11_Figure.jpg" alt="A triangular wire loop halfway inside a magnetic field."> If the metal triangle shown in the figure is pushed to the left, farther into the magnetic field, what is the direction of the induced current in the triangle?

Anderson Video - Lenz's Law Example

Electromagnetic Induction (11 of 15) Lenz's Law, An Explanation

An outer ring is connected to a variable voltage source. If the battery’s voltage is continuously INCREASING, what is the direction of the induced current in the inner ring, centered inside of the outer ring?<img class="fr-dii"src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/8ce84ff0">

What emf is created in a <math display=“inline”><mrow><mn>1</mn><mo>.</mo><mrow><mn>3</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></mrow></math> long conductor moving at 
<math><mrow><mn>45</mn><mtext>&#x2009;</mtext><mtext>m/s</mtext></mrow></math> in a <math display=“inline”><mrow><mn>3</mn><mo>.</mo><mn>0</mn><mtext>&#x00A0;</mtext><mtext>mT</mtext></mrow></math> magnetic field? Assume the conductor’s velocity is perpendicular to the field.

In a region of space, a magnetic field is increasing at <math display='inline'><mrow><mn>3</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">T</mi><mo>/</mo><mi mathvariant="normal" class="MathML-Unit">s</mi></mrow></math>. A square loop of wire with a side of <math display='inline'><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></math> is oriented perpendicular to the field. The loop has a total resistance of <math><mrow><mn>0.02</mn><mo rspace="thickmathspace">&#x2062;</mo><mo mathvariant="normal" class="MathML-Unit">&#x03A9;</mo></mrow></math>. What current is induced in the loop?

Lenz's Law for a Long Straight Wire

Lenz's Law (part 1 of 3)

Anderson Video - Lenz's Law

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